72756257371 has 12 divisors (see below), whose sum is σ = 84693973032. Its totient is φ = 62318927328.

The previous prime is 72756257359. The next prime is 72756257389. The reversal of 72756257371 is 17375265727.

It is not a de Polignac number, because 72756257371 - 2⁵ = 72756257339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72756257971) 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 11 ways as a sum of consecutive naturals, for example, 447865 + ... + 588298.

It is an arithmetic number, because the mean of its divisors is an integer number (7057831086).

Almost surely, 2^72756257371 is an apocalyptic number.

72756257371 is a deficient number, since it is larger than the sum of its proper divisors (11937715661).

72756257371 is a wasteful number, since it uses less digits than its factorization.

72756257371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037610 (or 1037603 counting only the distinct ones).

The product of its digits is 4321800, while the sum is 52.

The spelling of 72756257371 in words is "seventy-two billion, seven hundred fifty-six million, two hundred fifty-seven thousand, three hundred seventy-one".