6421552045 has 32 divisors (see below), whose sum is σ = 8288469504. Its totient is φ = 4764883200.

The previous prime is 6421552043. The next prime is 6421552063. The reversal of 6421552045 is 5402551246.

It is not a de Polignac number, because 6421552045 - 2¹ = 6421552043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6421552045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421552043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491619 + ... + 504511.

It is an arithmetic number, because the mean of its divisors is an integer number (259014672).

Almost surely, 2^6421552045 is an apocalyptic number.

It is an amenable number.

6421552045 is a deficient number, since it is larger than the sum of its proper divisors (1866917459).

6421552045 is a wasteful number, since it uses less digits than its factorization.

6421552045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13053.

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 6421552045 is about 80134.5870707524. The cubic root of 6421552045 is about 1858.7172761675.

The spelling of 6421552045 in words is "six billion, four hundred twenty-one million, five hundred fifty-two thousand, forty-five".