72858722865 has 8 divisors (see below), whose sum is σ = 116573956608. Its totient is φ = 38857985520.

The previous prime is 72858722789. The next prime is 72858722879. The reversal of 72858722865 is 56822785827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72858722865 - 2²⁰ = 72857674289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72858722799 and 72858722808.

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, 2428624081 + ... + 2428624110.

It is an arithmetic number, because the mean of its divisors is an integer number (14571744576).

Almost surely, 2^72858722865 is an apocalyptic number.

It is an amenable number.

72858722865 is a deficient number, since it is larger than the sum of its proper divisors (43715233743).

72858722865 is a wasteful number, since it uses less digits than its factorization.

72858722865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857248199.

The product of its digits is 30105600, while the sum is 60.

The spelling of 72858722865 in words is "seventy-two billion, eight hundred fifty-eight million, seven hundred twenty-two thousand, eight hundred sixty-five".