72698950656 has 88 divisors (see below), whose sum is σ = 215299202240. Its totient is φ = 24232974336.

The previous prime is 72698950633. The next prime is 72698950661. The reversal of 72698950656 is 65605989627.

72698950656 is a `hidden beast` number, since 72 + 6 + 9 + 8 + 9 + 506 + 56 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 72698950593 and 72698950602.

It is a congruent number.

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, 1287076 + ... + 1342371.

Almost surely, 2^72698950656 is an apocalyptic number.

It is an amenable number.

72698950656 is an abundant number, since it is smaller than the sum of its proper divisors (142600251584).

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

72698950656 is a wasteful number, since it uses less digits than its factorization.

72698950656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629476 (or 2629452 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 72698950656 in words is "seventy-two billion, six hundred ninety-eight million, nine hundred fifty thousand, six hundred fifty-six".