72858651515 has 8 divisors (see below), whose sum is σ = 94155795888. Its totient is φ = 53803311840.

The previous prime is 72858651499. The next prime is 72858651529. The reversal of 72858651515 is 51515685827.

It is a happy number.

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

It is not a de Polignac number, because 72858651515 - 2⁴ = 72858651499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560451101 + ... + 560451230.

It is an arithmetic number, because the mean of its divisors is an integer number (11769474486).

Almost surely, 2^72858651515 is an apocalyptic number.

72858651515 is a deficient number, since it is larger than the sum of its proper divisors (21297144373).

72858651515 is a wasteful number, since it uses less digits than its factorization.

72858651515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120902349.

The product of its digits is 3360000, while the sum is 53.

The spelling of 72858651515 in words is "seventy-two billion, eight hundred fifty-eight million, six hundred fifty-one thousand, five hundred fifteen".