72217365103 has 16 divisors (see below), whose sum is σ = 78361823680. Its totient is φ = 66552194592.

The previous prime is 72217365089. The next prime is 72217365131. The reversal of 72217365103 is 30156371227.

It is a de Polignac number, because none of the positive numbers 2^k-72217365103 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 (72217365203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319950 + ... + 1373572.

It is an arithmetic number, because the mean of its divisors is an integer number (4897613980).

Almost surely, 2^72217365103 is an apocalyptic number.

72217365103 is a deficient number, since it is larger than the sum of its proper divisors (6144458577).

72217365103 is an equidigital number, since it uses as much as digits as its factorization.

72217365103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54275 (or 54249 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 72217365103 in words is "seventy-two billion, two hundred seventeen million, three hundred sixty-five thousand, one hundred three".