72726678056 has 32 divisors (see below), whose sum is σ = 140022086400. Its totient is φ = 35391692160.

The previous prime is 72726677987. The next prime is 72726678061. The reversal of 72726678056 is 65087662727.

It is a super-2 number, since 2×72726678056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72726677992 and 72726678010.

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, 127160 + ... + 402023.

It is an arithmetic number, because the mean of its divisors is an integer number (4375690200).

Almost surely, 2^72726678056 is an apocalyptic number.

It is an amenable number.

72726678056 is a deficient number, since it is larger than the sum of its proper divisors (67295408344).

72726678056 is a wasteful number, since it uses less digits than its factorization.

72726678056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529649 (or 529645 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 72726678056 in words is "seventy-two billion, seven hundred twenty-six million, six hundred seventy-eight thousand, fifty-six".