616404254564 has 24 divisors (see below), whose sum is σ = 1233096184320. Its totient is φ = 264111607296.

The previous prime is 616404254537. The next prime is 616404254581. The reversal of 616404254564 is 465452404616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446292 + ... + 2686475.

It is an arithmetic number, because the mean of its divisors is an integer number (51379007680).

Almost surely, 2^616404254564 is an apocalyptic number.

It is an amenable number.

616404254564 is an abundant number, since it is smaller than the sum of its proper divisors (616691929756).

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

616404254564 is a wasteful number, since it uses less digits than its factorization.

616404254564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5137067 (or 5137065 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 616404254564 in words is "six hundred sixteen billion, four hundred four million, two hundred fifty-four thousand, five hundred sixty-four".