6349921125660 has 72 divisors (see below), whose sum is σ = 22013059906656. Its totient is φ = 1451410542720.

The previous prime is 6349921125641. The next prime is 6349921125661. The reversal of 6349921125660 is 665211299436.

6349921125660 is a `hidden beast` number, since 6 + 3 + 49 + 9 + 21 + 12 + 566 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6349921125597 and 6349921125606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349921125661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2519808711 + ... + 2519811230.

It is an arithmetic number, because the mean of its divisors is an integer number (305736943148).

Almost surely, 2^{6349921125660} is an apocalyptic number.

6349921125660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6349921125660 is an abundant number, since it is smaller than the sum of its proper divisors (15663138780996).

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

6349921125660 is a wasteful number, since it uses less digits than its factorization.

6349921125660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039619963 (or 5039619958 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 6349921125660 in words is "six trillion, three hundred forty-nine billion, nine hundred twenty-one million, one hundred twenty-five thousand, six hundred sixty".