72157140850 has 48 divisors (see below), whose sum is σ = 136026559368. Its totient is φ = 28474583040.

The previous prime is 72157140821. The next prime is 72157140871. The reversal of 72157140850 is 5804175127.

It can be written as a sum of positive squares in 12 ways, for example, as 8294291329 + 63862849521 = 91073^2 + 252711^2 .

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 23 ways as a sum of consecutive naturals, for example, 1513984 + ... + 1560916.

Almost surely, 2^72157140850 is an apocalyptic number.

72157140850 is a deficient number, since it is larger than the sum of its proper divisors (63869418518).

72157140850 is a wasteful number, since it uses less digits than its factorization.

72157140850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47359 (or 47354 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 72157140850 in words is "seventy-two billion, one hundred fifty-seven million, one hundred forty thousand, eight hundred fifty".