72747103751 has 16 divisors (see below), whose sum is σ = 86024125440. Its totient is φ = 60192111840.

The previous prime is 72747103747. The next prime is 72747103753. The reversal of 72747103751 is 15730174727.

It is not a de Polignac number, because 72747103751 - 2² = 72747103747 is a prime.

It is a super-2 number, since 2×72747103751² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72747103753) 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, 1027640 + ... + 1096146.

It is an arithmetic number, because the mean of its divisors is an integer number (5376507840).

Almost surely, 2^72747103751 is an apocalyptic number.

72747103751 is a deficient number, since it is larger than the sum of its proper divisors (13277021689).

72747103751 is a wasteful number, since it uses less digits than its factorization.

72747103751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73774.

The product of its (nonzero) digits is 288120, while the sum is 44.

The spelling of 72747103751 in words is "seventy-two billion, seven hundred forty-seven million, one hundred three thousand, seven hundred fifty-one".