72276818745 has 32 divisors (see below), whose sum is σ = 116750570112. Its totient is φ = 38178911232.

The previous prime is 72276818689. The next prime is 72276818749. The reversal of 72276818745 is 54781867227.

It is not a de Polignac number, because 72276818745 - 2⁷ = 72276818617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72276818749) 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, 2448162 + ... + 2477508.

It is an arithmetic number, because the mean of its divisors is an integer number (3648455316).

Almost surely, 2^72276818745 is an apocalyptic number.

It is an amenable number.

72276818745 is a deficient number, since it is larger than the sum of its proper divisors (44473751367).

72276818745 is a wasteful number, since it uses less digits than its factorization.

72276818745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30921.

The product of its digits is 10536960, while the sum is 57.

The spelling of 72276818745 in words is "seventy-two billion, two hundred seventy-six million, eight hundred eighteen thousand, seven hundred forty-five".