617661504998 has 8 divisors (see below), whose sum is σ = 926681777640. Its totient is φ = 308767579120.

The previous prime is 617661504983. The next prime is 617661505001. The reversal of 617661504998 is 899405166716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 617661504998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31574468 + ... + 31594023.

It is an arithmetic number, because the mean of its divisors is an integer number (115835222205).

Almost surely, 2^617661504998 is an apocalyptic number.

617661504998 is a deficient number, since it is larger than the sum of its proper divisors (309020272642).

617661504998 is a wasteful number, since it uses less digits than its factorization.

617661504998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63173382.

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 617661504998 in words is "six hundred seventeen billion, six hundred sixty-one million, five hundred four thousand, nine hundred ninety-eight".