72516791445 has 32 divisors (see below), whose sum is σ = 132648461568. Its totient is φ = 33138951168.

The previous prime is 72516791441. The next prime is 72516791483. The reversal of 72516791445 is 54419761527.

It is not a de Polignac number, because 72516791445 - 2² = 72516791441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72516791441) 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, 184987 + ... + 423383.

It is an arithmetic number, because the mean of its divisors is an integer number (4145264424).

Almost surely, 2^72516791445 is an apocalyptic number.

It is an amenable number.

72516791445 is a deficient number, since it is larger than the sum of its proper divisors (60131670123).

72516791445 is a wasteful number, since it uses less digits than its factorization.

72516791445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241309.

The product of its digits is 2116800, while the sum is 51.

The spelling of 72516791445 in words is "seventy-two billion, five hundred sixteen million, seven hundred ninety-one thousand, four hundred forty-five".