72865620878 has 8 divisors (see below), whose sum is σ = 109301458968. Its totient is φ = 36431801224.

The previous prime is 72865620829. The next prime is 72865620899. The reversal of 72865620878 is 87802656827.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410876 + ... + 560847.

It is an arithmetic number, because the mean of its divisors is an integer number (13662682371).

Almost surely, 2^72865620878 is an apocalyptic number.

72865620878 is a deficient number, since it is larger than the sum of its proper divisors (36435838090).

72865620878 is a wasteful number, since it uses less digits than its factorization.

72865620878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009218.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 72865620878 in words is "seventy-two billion, eight hundred sixty-five million, six hundred twenty thousand, eight hundred seventy-eight".