72372859515 has 24 divisors (see below), whose sum is σ = 136850498928. Its totient is φ = 35089871040.

The previous prime is 72372859487. The next prime is 72372859571. The reversal of 72372859515 is 51595827327.

72372859515 is a `hidden beast` number, since 7 + 2 + 3 + 72 + 8 + 59 + 515 = 666.

It is not a de Polignac number, because 72372859515 - 2⁵ = 72372859483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73103404 + ... + 73104393.

It is an arithmetic number, because the mean of its divisors is an integer number (5702104122).

Almost surely, 2^72372859515 is an apocalyptic number.

72372859515 is a deficient number, since it is larger than the sum of its proper divisors (64477639413).

72372859515 is a wasteful number, since it uses less digits than its factorization.

72372859515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146207819 (or 146207816 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 54.

The spelling of 72372859515 in words is "seventy-two billion, three hundred seventy-two million, eight hundred fifty-nine thousand, five hundred fifteen".