72617395858 has 16 divisors (see below), whose sum is σ = 124559847360. Its totient is φ = 31103520336.

The previous prime is 72617395849. The next prime is 72617395861. The reversal of 72617395858 is 85859371627.

It is a junction number, because it is equal to n+sod(n) for n = 72617395796 and 72617395805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493616 + ... + 1541467.

It is an arithmetic number, because the mean of its divisors is an integer number (7784990460).

Almost surely, 2^72617395858 is an apocalyptic number.

72617395858 is a deficient number, since it is larger than the sum of its proper divisors (51942451502).

72617395858 is a wasteful number, since it uses less digits than its factorization.

72617395858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036801.

The product of its digits is 25401600, while the sum is 61.

The spelling of 72617395858 in words is "seventy-two billion, six hundred seventeen million, three hundred ninety-five thousand, eight hundred fifty-eight".