2161315524 has 24 divisors (see below), whose sum is σ = 5043826368. Its totient is φ = 720330400.

The previous prime is 2161315523. The next prime is 2161315561. The reversal of 2161315524 is 4255131612.

It is a junction number, because it is equal to n+sod(n) for n = 2161315491 and 2161315500.

It is not an unprimeable number, because it can be changed into a prime (2161315523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135574 + ... + 150674.

It is an arithmetic number, because the mean of its divisors is an integer number (210159432).

Almost surely, 2^2161315524 is an apocalyptic number.

It is an amenable number.

2161315524 is an abundant number, since it is smaller than the sum of its proper divisors (2882510844).

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

2161315524 is a wasteful number, since it uses less digits than its factorization.

2161315524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27035 (or 27033 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 2161315524 is about 46489.9507850890. The cubic root of 2161315524 is about 1292.9231876630.

The spelling of 2161315524 in words is "two billion, one hundred sixty-one million, three hundred fifteen thousand, five hundred twenty-four".