72102930421 has 16 divisors (see below), whose sum is σ = 72915111360. Its totient is φ = 71296848000.

The previous prime is 72102930379. The next prime is 72102930451. The reversal of 72102930421 is 12403920127.

It is a cyclic number.

It is not a de Polignac number, because 72102930421 - 2⁹ = 72102929909 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 (72102930451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22163431 + ... + 22166683.

It is an arithmetic number, because the mean of its divisors is an integer number (4557194460).

Almost surely, 2^72102930421 is an apocalyptic number.

It is an amenable number.

72102930421 is a deficient number, since it is larger than the sum of its proper divisors (812180939).

72102930421 is a wasteful number, since it uses less digits than its factorization.

72102930421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 72102930421 in words is "seventy-two billion, one hundred two million, nine hundred thirty thousand, four hundred twenty-one".