72689595979 has 32 divisors (see below), whose sum is σ = 103338256896. Its totient is φ = 49208670720.

The previous prime is 72689595977. The next prime is 72689595989. The reversal of 72689595979 is 97959598627.

It is not a de Polignac number, because 72689595979 - 2¹ = 72689595977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72689595973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2118777 + ... + 2152810.

It is an arithmetic number, because the mean of its divisors is an integer number (3229320528).

Almost surely, 2^72689595979 is an apocalyptic number.

72689595979 is a deficient number, since it is larger than the sum of its proper divisors (30648660917).

72689595979 is a wasteful number, since it uses less digits than its factorization.

72689595979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271635.

The product of its digits is 771573600, while the sum is 76.

The spelling of 72689595979 in words is "seventy-two billion, six hundred eighty-nine million, five hundred ninety-five thousand, nine hundred seventy-nine".