2151396576 has 144 divisors (see below), whose sum is σ = 7036009344. Its totient is φ = 610820352.

The previous prime is 2151396539. The next prime is 2151396593. The reversal of 2151396576 is 6756931512.

2151396576 is a `hidden beast` number, since 2 + 1 + 513 + 9 + 65 + 76 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325335 + ... + 331881.

It is an arithmetic number, because the mean of its divisors is an integer number (48861176).

Almost surely, 2^2151396576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151396576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3518004672).

2151396576 is an abundant number, since it is smaller than the sum of its proper divisors (4884612768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151396576 is a wasteful number, since it uses less digits than its factorization.

2151396576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733 (or 6722 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 2151396576 is about 46383.1496990017. The cubic root of 2151396576 is about 1290.9422789157.

The spelling of 2151396576 in words is "two billion, one hundred fifty-one million, three hundred ninety-six thousand, five hundred seventy-six".