72665112061735 has 16 divisors (see below), whose sum is σ = 87420786299136. Its totient is φ = 57983665183488.

The previous prime is 72665112061733. The next prime is 72665112061739. The reversal of 72665112061735 is 53716021156627.

It is a cyclic number.

It is not a de Polignac number, because 72665112061735 - 2¹ = 72665112061733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72665112061733) 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, 58444522 + ... + 59674888.

It is an arithmetic number, because the mean of its divisors is an integer number (5463799143696).

Almost surely, 2^{72665112061735} is an apocalyptic number.

72665112061735 is a deficient number, since it is larger than the sum of its proper divisors (14755674237401).

72665112061735 is a wasteful number, since it uses less digits than its factorization.

72665112061735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260522.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 72665112061735 in words is "seventy-two trillion, six hundred sixty-five billion, one hundred twelve million, sixty-one thousand, seven hundred thirty-five".