72111958344734 has 32 divisors (see below), whose sum is σ = 134880441967872. Its totient is φ = 28091044296000.

The previous prime is 72111958344731. The next prime is 72111958344757. The reversal of 72111958344734 is 43744385911127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72111958344731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36739487 + ... + 38652474.

It is an arithmetic number, because the mean of its divisors is an integer number (4215013811496).

Almost surely, 2^{72111958344734} is an apocalyptic number.

72111958344734 is a deficient number, since it is larger than the sum of its proper divisors (62768483623138).

72111958344734 is a wasteful number, since it uses less digits than its factorization.

72111958344734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75398192.

The product of its digits is 20321280, while the sum is 59.

The spelling of 72111958344734 in words is "seventy-two trillion, one hundred eleven billion, nine hundred fifty-eight million, three hundred forty-four thousand, seven hundred thirty-four".