72940616351 has 4 divisors (see below), whose sum is σ = 72953327304. Its totient is φ = 72927905400.

The previous prime is 72940616299. The next prime is 72940616377. The reversal of 72940616351 is 15361604927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15361604927 = 9281 ⋅1655167.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72940616351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72940616251) 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 3 ways as a sum of consecutive naturals, for example, 6346865 + ... + 6358346.

It is an arithmetic number, because the mean of its divisors is an integer number (18238331826).

Almost surely, 2^72940616351 is an apocalyptic number.

72940616351 is a deficient number, since it is larger than the sum of its proper divisors (12710953).

72940616351 is a wasteful number, since it uses less digits than its factorization.

72940616351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710952.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 72940616351 in words is "seventy-two billion, nine hundred forty million, six hundred sixteen thousand, three hundred fifty-one".