616537805500 has 48 divisors (see below), whose sum is σ = 1377833000544. Its totient is φ = 240879878400.

The previous prime is 616537805453. The next prime is 616537805509. The reversal of 616537805500 is 5508735616.

It is a super-2 number, since 2×616537805500² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616537805509) 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, 14316589 + ... + 14359588.

It is an arithmetic number, because the mean of its divisors is an integer number (28704854178).

Almost surely, 2^616537805500 is an apocalyptic number.

It is an amenable number.

616537805500 is an abundant number, since it is smaller than the sum of its proper divisors (761295195044).

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

616537805500 is a wasteful number, since it uses less digits than its factorization.

616537805500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28676239 (or 28676227 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 616537805500 in words is "six hundred sixteen billion, five hundred thirty-seven million, eight hundred five thousand, five hundred".