72116521001 has 8 divisors (see below), whose sum is σ = 83411880384. Its totient is φ = 61069411440.

The previous prime is 72116520977. The next prime is 72116521069. The reversal of 72116521001 is 10012561127.

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 72116521001 - 2¹⁰ = 72116519977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72116521801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62061830 + ... + 62062991.

It is an arithmetic number, because the mean of its divisors is an integer number (10426485048).

Almost surely, 2^72116521001 is an apocalyptic number.

It is an amenable number.

72116521001 is a deficient number, since it is larger than the sum of its proper divisors (11295359383).

72116521001 is a wasteful number, since it uses less digits than its factorization.

72116521001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124124911.

The product of its (nonzero) digits is 840, while the sum is 26.

The spelling of 72116521001 in words is "seventy-two billion, one hundred sixteen million, five hundred twenty-one thousand, one".