6156404520 has 128 divisors (see below), whose sum is σ = 21259929600. Its totient is φ = 1397028096.

The previous prime is 6156404447. The next prime is 6156404563. The reversal of 6156404520 is 254046516.

It is a super-2 number, since 2×6156404520² = 75802633227752860800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90397 + ... + 143123.

It is an arithmetic number, because the mean of its divisors is an integer number (166093200).

Almost surely, 2^6156404520 is an apocalyptic number.

6156404520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6156404520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10629964800).

6156404520 is an abundant number, since it is smaller than the sum of its proper divisors (15103525080).

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

6156404520 is a wasteful number, since it uses less digits than its factorization.

6156404520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52887 (or 52883 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 6156404520 is about 78462.7588095142. The cubic root of 6156404520 is about 1832.7745663176.

The spelling of 6156404520 in words is "six billion, one hundred fifty-six million, four hundred four thousand, five hundred twenty".