6397595136 has 120 divisors (see below), whose sum is σ = 19148112984. Its totient is φ = 2132490240.

The previous prime is 6397595129. The next prime is 6397595137. The reversal of 6397595136 is 6315957936.

6397595136 is a `hidden beast` number, since 6 + 39 + 7 + 595 + 13 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397595137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98706 + ... + 150126.

Almost surely, 2^6397595136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6397595136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9574056492).

6397595136 is an abundant number, since it is smaller than the sum of its proper divisors (12750517848).

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

6397595136 is an frugal number, since it uses more digits than its factorization.

6397595136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51454 (or 51426 counting only the distinct ones).

The product of its digits is 4592700, while the sum is 54.

The square root of 6397595136 is about 79984.9681877789. The cubic root of 6397595136 is about 1856.4029545220.

The spelling of 6397595136 in words is "six billion, three hundred ninety-seven million, five hundred ninety-five thousand, one hundred thirty-six".