72164446103 has 4 divisors (see below), whose sum is σ = 72683614920. Its totient is φ = 71645277288.

The previous prime is 72164446093. The next prime is 72164446111. The reversal of 72164446103 is 30164446127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30164446127 = 84521 ⋅356887.

It is a cyclic number.

It is not a de Polignac number, because 72164446103 - 2⁴ = 72164446087 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 (72164446303) 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 3 ways as a sum of consecutive naturals, for example, 259584200 + ... + 259584477.

It is an arithmetic number, because the mean of its divisors is an integer number (18170903730).

Almost surely, 2^72164446103 is an apocalyptic number.

72164446103 is a deficient number, since it is larger than the sum of its proper divisors (519168817).

72164446103 is a wasteful number, since it uses less digits than its factorization.

72164446103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519168816.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 72164446103 in words is "seventy-two billion, one hundred sixty-four million, four hundred forty-six thousand, one hundred three".