72760071721 has 16 divisors (see below), whose sum is σ = 78367752000. Its totient is φ = 67345387200.

The previous prime is 72760071719. The next prime is 72760071743. The reversal of 72760071721 is 12717006727.

It is a cyclic number.

It is not a de Polignac number, because 72760071721 - 2¹ = 72760071719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72760071781) 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 15 ways as a sum of consecutive naturals, for example, 37975 + ... + 383356.

It is an arithmetic number, because the mean of its divisors is an integer number (4897984500).

Almost surely, 2^72760071721 is an apocalyptic number.

It is an amenable number.

72760071721 is a deficient number, since it is larger than the sum of its proper divisors (5607680279).

72760071721 is a wasteful number, since it uses less digits than its factorization.

72760071721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421560.

The product of its (nonzero) digits is 57624, while the sum is 40.

The spelling of 72760071721 in words is "seventy-two billion, seven hundred sixty million, seventy-one thousand, seven hundred twenty-one".