72866939828 has 12 divisors (see below), whose sum is σ = 130482660000. Its totient is φ = 35586179832.

The previous prime is 72866939777. The next prime is 72866939891. The reversal of 72866939828 is 82893966827.

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 3 ways as a sum of consecutive naturals, for example, 211822328 + ... + 211822671.

It is an arithmetic number, because the mean of its divisors is an integer number (10873555000).

Almost surely, 2^72866939828 is an apocalyptic number.

It is an amenable number.

72866939828 is a deficient number, since it is larger than the sum of its proper divisors (57615720172).

72866939828 is a wasteful number, since it uses less digits than its factorization.

72866939828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423645046 (or 423645044 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 68.

The spelling of 72866939828 in words is "seventy-two billion, eight hundred sixty-six million, nine hundred thirty-nine thousand, eight hundred twenty-eight".