616397257632 has 96 divisors (see below), whose sum is σ = 1834218630720. Its totient is φ = 179678545920.

The previous prime is 616397257607. The next prime is 616397257633. The reversal of 616397257632 is 236752793616.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (616397257633) 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, 12973869 + ... + 13021292.

It is an arithmetic number, because the mean of its divisors is an integer number (19106444070).

Almost surely, 2^616397257632 is an apocalyptic number.

It is an amenable number.

616397257632 is an abundant number, since it is smaller than the sum of its proper divisors (1217821373088).

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

616397257632 is a wasteful number, since it uses less digits than its factorization.

616397257632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25995206 (or 25995198 counting only the distinct ones).

The product of its digits is 17146080, while the sum is 57.

The spelling of 616397257632 in words is "six hundred sixteen billion, three hundred ninety-seven million, two hundred fifty-seven thousand, six hundred thirty-two".