72519658918 has 32 divisors (see below), whose sum is σ = 124887873600. Its totient is φ = 30937966080.

The previous prime is 72519658873. The next prime is 72519658943. The reversal of 72519658918 is 81985691527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4117980 + ... + 4135552.

It is an arithmetic number, because the mean of its divisors is an integer number (3902746050).

Almost surely, 2^72519658918 is an apocalyptic number.

72519658918 is a deficient number, since it is larger than the sum of its proper divisors (52368214682).

72519658918 is a wasteful number, since it uses less digits than its factorization.

72519658918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18912.

The product of its digits is 10886400, while the sum is 61.

The spelling of 72519658918 in words is "seventy-two billion, five hundred nineteen million, six hundred fifty-eight thousand, nine hundred eighteen".