72715588121 has 8 divisors (see below), whose sum is σ = 79329254304. Its totient is φ = 66102448320.

The previous prime is 72715588111. The next prime is 72715588133. The reversal of 72715588121 is 12188551727.

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

It is a cyclic number.

It is not a de Polignac number, because 72715588121 - 2¹⁴ = 72715571737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72715588111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191825 + ... + 426881.

It is an arithmetic number, because the mean of its divisors is an integer number (9916156788).

Almost surely, 2^72715588121 is an apocalyptic number.

It is an amenable number.

72715588121 is a deficient number, since it is larger than the sum of its proper divisors (6613666183).

72715588121 is a wasteful number, since it uses less digits than its factorization.

72715588121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263191.

The product of its digits is 313600, while the sum is 47.

The spelling of 72715588121 in words is "seventy-two billion, seven hundred fifteen million, five hundred eighty-eight thousand, one hundred twenty-one".