398655674650 has 48 divisors (see below), whose sum is σ = 745493356800. Its totient is φ = 158605387200.

The previous prime is 398655674639. The next prime is 398655674693. The reversal of 398655674650 is 56476556893.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8091892 + ... + 8141008.

It is an arithmetic number, because the mean of its divisors is an integer number (15531111600).

Almost surely, 2^398655674650 is an apocalyptic number.

398655674650 is a deficient number, since it is larger than the sum of its proper divisors (346837682150).

398655674650 is a wasteful number, since it uses less digits than its factorization.

398655674650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49999 (or 49994 counting only the distinct ones).

The product of its (nonzero) digits is 163296000, while the sum is 64.

The spelling of 398655674650 in words is "three hundred ninety-eight billion, six hundred fifty-five million, six hundred seventy-four thousand, six hundred fifty".