72542056377 has 32 divisors (see below), whose sum is σ = 111752467200. Its totient is φ = 40999385088.

The previous prime is 72542056339. The next prime is 72542056397. The reversal of 72542056377 is 77365024527.

It is not a de Polignac number, because 72542056377 - 2¹⁰ = 72542055353 is a prime.

It is a super-2 number, since 2×72542056377² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72542056337) 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, 1274593 + ... + 1330289.

It is an arithmetic number, because the mean of its divisors is an integer number (3492264600).

Almost surely, 2^72542056377 is an apocalyptic number.

It is an amenable number.

72542056377 is a deficient number, since it is larger than the sum of its proper divisors (39210410823).

72542056377 is a wasteful number, since it uses less digits than its factorization.

72542056377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56385.

The product of its (nonzero) digits is 2469600, while the sum is 48.

The spelling of 72542056377 in words is "seventy-two billion, five hundred forty-two million, fifty-six thousand, three hundred seventy-seven".