72665112061734 has 32 divisors (see below), whose sum is σ = 145567970574336. Its totient is φ = 24182080802880.

The previous prime is 72665112061733. The next prime is 72665112061739. The reversal of 72665112061734 is 43716021156627.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367106139 + ... + 367304025.

It is an arithmetic number, because the mean of its divisors is an integer number (4548999080448).

Almost surely, 2^{72665112061734} is an apocalyptic number.

72665112061734 is an abundant number, since it is smaller than the sum of its proper divisors (72902858512602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72665112061734 is a wasteful number, since it uses less digits than its factorization.

72665112061734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297700.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 72665112061734 in words is "seventy-two trillion, six hundred sixty-five billion, one hundred twelve million, sixty-one thousand, seven hundred thirty-four".