72442804664927 has 4 divisors (see below), whose sum is σ = 72442875592320. Its totient is φ = 72442733737536.

The previous prime is 72442804664809. The next prime is 72442804664969. The reversal of 72442804664927 is 72946640824427.

It is a happy number.

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-72442804664927 is a prime.

It is a super-2 number, since 2×72442804664927² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72442804664987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33908927 + ... + 35981952.

It is an arithmetic number, because the mean of its divisors is an integer number (18110718898080).

Almost surely, 2^{72442804664927} is an apocalyptic number.

72442804664927 is a deficient number, since it is larger than the sum of its proper divisors (70927393).

72442804664927 is a wasteful number, since it uses less digits than its factorization.

72442804664927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70927392.

The product of its (nonzero) digits is 260112384, while the sum is 65.

The spelling of 72442804664927 in words is "seventy-two trillion, four hundred forty-two billion, eight hundred four million, six hundred sixty-four thousand, nine hundred twenty-seven".