6156364440 has 64 divisors (see below), whose sum is σ = 18782150400. Its totient is φ = 1613869952.

The previous prime is 6156364421. The next prime is 6156364447. The reversal of 6156364440 is 444636516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6156364447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427692 + ... + 441851.

It is an arithmetic number, because the mean of its divisors is an integer number (293471100).

Almost surely, 2^6156364440 is an apocalyptic number.

6156364440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6156364440 is an abundant number, since it is smaller than the sum of its proper divisors (12625785960).

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

6156364440 is a wasteful number, since it uses less digits than its factorization.

6156364440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869616 (or 869612 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 6156364440 is about 78462.5034013063. The cubic root of 6156364440 is about 1832.7705890088.

The spelling of 6156364440 in words is "six billion, one hundred fifty-six million, three hundred sixty-four thousand, four hundred forty".