646115511596 has 24 divisors (see below), whose sum is σ = 1152154043040. Its totient is φ = 316986193152.

The previous prime is 646115511593. The next prime is 646115511619. The reversal of 646115511596 is 695115511646.

It is not an unprimeable number, because it can be changed into a prime (646115511593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7148861 + ... + 7238676.

It is an arithmetic number, because the mean of its divisors is an integer number (48006418460).

Almost surely, 2^646115511596 is an apocalyptic number.

It is an amenable number.

646115511596 is a deficient number, since it is larger than the sum of its proper divisors (506038531444).

646115511596 is a wasteful number, since it uses less digits than its factorization.

646115511596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14387753 (or 14387751 counting only the distinct ones).

The product of its digits is 972000, while the sum is 50.

Adding to 646115511596 its sum of digits (50), we get a palindrome (646115511646).

The spelling of 646115511596 in words is "six hundred forty-six billion, one hundred fifteen million, five hundred eleven thousand, five hundred ninety-six".