72424516161 has 32 divisors (see below), whose sum is σ = 104372271360. Its totient is φ = 44534276864.

The previous prime is 72424516123. The next prime is 72424516223. The reversal of 72424516161 is 16161542427.

It is a cyclic number.

It is not a de Polignac number, because 72424516161 - 2²⁵ = 72390961729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72424516361) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1572091 + ... + 1617503.

It is an arithmetic number, because the mean of its divisors is an integer number (3261633480).

Almost surely, 2^72424516161 is an apocalyptic number.

It is an amenable number.

72424516161 is a deficient number, since it is larger than the sum of its proper divisors (31947755199).

72424516161 is a wasteful number, since it uses less digits than its factorization.

72424516161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46265.

The product of its digits is 80640, while the sum is 39.

The spelling of 72424516161 in words is "seventy-two billion, four hundred twenty-four million, five hundred sixteen thousand, one hundred sixty-one".