73272965145 has 32 divisors (see below), whose sum is σ = 118265184000. Its totient is φ = 38737569024.

The previous prime is 73272965141. The next prime is 73272965189. The reversal of 73272965145 is 54156927237.

It is not a de Polignac number, because 73272965145 - 2² = 73272965141 is a prime.

It is a super-2 number, since 2×73272965145² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73272965141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 757339 + ... + 848591.

It is an arithmetic number, because the mean of its divisors is an integer number (3695787000).

Almost surely, 2^73272965145 is an apocalyptic number.

It is an amenable number.

73272965145 is a deficient number, since it is larger than the sum of its proper divisors (44992218855).

73272965145 is a wasteful number, since it uses less digits than its factorization.

73272965145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91729.

The product of its digits is 3175200, while the sum is 51.

The spelling of 73272965145 in words is "seventy-three billion, two hundred seventy-two million, nine hundred sixty-five thousand, one hundred forty-five".