72217631612042 has 16 divisors (see below), whose sum is σ = 123809405258112. Its totient is φ = 30948475781520.

The previous prime is 72217631612011. The next prime is 72217631612051. The reversal of 72217631612042 is 24021613671227.

It is a junction number, because it is equal to n+sod(n) for n = 72217631611984 and 72217631612002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 161248934 + ... + 161696177.

It is an arithmetic number, because the mean of its divisors is an integer number (7738087828632).

Almost surely, 2^{72217631612042} is an apocalyptic number.

72217631612042 is a deficient number, since it is larger than the sum of its proper divisors (51591773646070).

72217631612042 is a wasteful number, since it uses less digits than its factorization.

72217631612042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322961093.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 72217631612042 in words is "seventy-two trillion, two hundred seventeen billion, six hundred thirty-one million, six hundred twelve thousand, forty-two".