72344625121 has 16 divisors (see below), whose sum is σ = 75159475200. Its totient is φ = 69584921280.

The previous prime is 72344625107. The next prime is 72344625181. The reversal of 72344625121 is 12152644327.

It is not a de Polignac number, because 72344625121 - 2¹¹ = 72344623073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72344625181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3536280 + ... + 3556678.

It is an arithmetic number, because the mean of its divisors is an integer number (4697467200).

Almost surely, 2^72344625121 is an apocalyptic number.

It is an amenable number.

72344625121 is a deficient number, since it is larger than the sum of its proper divisors (2814850079).

72344625121 is a wasteful number, since it uses less digits than its factorization.

72344625121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21744.

The product of its digits is 80640, while the sum is 37.

The spelling of 72344625121 in words is "seventy-two billion, three hundred forty-four million, six hundred twenty-five thousand, one hundred twenty-one".