72163512258 has 16 divisors (see below), whose sum is σ = 144377505216. Its totient is φ = 24046090640.

The previous prime is 72163512247. The next prime is 72163512277. The reversal of 72163512258 is 85221536127.

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 7 ways as a sum of consecutive naturals, for example, 2084766 + ... + 2119097.

It is an arithmetic number, because the mean of its divisors is an integer number (9023594076).

Almost surely, 2^72163512258 is an apocalyptic number.

72163512258 is an abundant number, since it is smaller than the sum of its proper divisors (72213992958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72163512258 is a wasteful number, since it uses less digits than its factorization.

72163512258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206729.

The product of its digits is 201600, while the sum is 42.

The spelling of 72163512258 in words is "seventy-two billion, one hundred sixty-three million, five hundred twelve thousand, two hundred fifty-eight".