72102930451 has 2 divisors, whose sum is σ = 72102930452. Its totient is φ = 72102930450.

The previous prime is 72102930379. The next prime is 72102930457. The reversal of 72102930451 is 15403920127.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72102930451 - 2⁹ = 72102929939 is a prime.

It is not a weakly prime, because it can be changed into another prime (72102930457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36051465225 + 36051465226.

It is an arithmetic number, because the mean of its divisors is an integer number (36051465226).

Almost surely, 2^72102930451 is an apocalyptic number.

72102930451 is a deficient number, since it is larger than the sum of its proper divisors (1).

72102930451 is an equidigital number, since it uses as much as digits as its factorization.

72102930451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 72102930451 in words is "seventy-two billion, one hundred two million, nine hundred thirty thousand, four hundred fifty-one".