72656451955 has 8 divisors (see below), whose sum is σ = 90194216400. Its totient is φ = 56120845536.

The previous prime is 72656451941. The next prime is 72656451971. The reversal of 72656451955 is 55915465627.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72656451955 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72656451896 and 72656451905.

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, 250539345 + ... + 250539634.

It is an arithmetic number, because the mean of its divisors is an integer number (11274277050).

Almost surely, 2^72656451955 is an apocalyptic number.

72656451955 is a deficient number, since it is larger than the sum of its proper divisors (17537764445).

72656451955 is a wasteful number, since it uses less digits than its factorization.

72656451955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501079013.

The product of its digits is 11340000, while the sum is 55.

The spelling of 72656451955 in words is "seventy-two billion, six hundred fifty-six million, four hundred fifty-one thousand, nine hundred fifty-five".