72420014365715 has 4 divisors (see below), whose sum is σ = 86904017238864. Its totient is φ = 57936011492568.

The previous prime is 72420014365661. The next prime is 72420014365753. The reversal of 72420014365715 is 51756341002427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72420014365715 is a prime.

It is a super-2 number, since 2×72420014365715² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72420014365715.

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 3 ways as a sum of consecutive naturals, for example, 7242001436567 + ... + 7242001436576.

It is an arithmetic number, because the mean of its divisors is an integer number (21726004309716).

Almost surely, 2^{72420014365715} is an apocalyptic number.

72420014365715 is a deficient number, since it is larger than the sum of its proper divisors (14484002873149).

72420014365715 is a wasteful number, since it uses less digits than its factorization.

72420014365715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14484002873148.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 72420014365715 in words is "seventy-two trillion, four hundred twenty billion, fourteen million, three hundred sixty-five thousand, seven hundred fifteen".