72621437976886 has 64 divisors (see below), whose sum is σ = 120796952928768. Its totient is φ = 32568851132928.

The previous prime is 72621437976877. The next prime is 72621437976953. The reversal of 72621437976886 is 68867973412627.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1948138080 + ... + 1948175356.

It is an arithmetic number, because the mean of its divisors is an integer number (1887452389512).

Almost surely, 2^{72621437976886} is an apocalyptic number.

72621437976886 is a deficient number, since it is larger than the sum of its proper divisors (48175514951882).

72621437976886 is a wasteful number, since it uses less digits than its factorization.

72621437976886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46405.

The product of its digits is 2048385024, while the sum is 76.

The spelling of 72621437976886 in words is "seventy-two trillion, six hundred twenty-one billion, four hundred thirty-seven million, nine hundred seventy-six thousand, eight hundred eighty-six".