72250706491 has 2 divisors, whose sum is σ = 72250706492. Its totient is φ = 72250706490.

The previous prime is 72250706461. The next prime is 72250706501. The reversal of 72250706491 is 19460705227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72250706491 - 2²⁹ = 71713835579 is a prime.

It is not a weakly prime, because it can be changed into another prime (72250706461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36125353245 + 36125353246.

It is an arithmetic number, because the mean of its divisors is an integer number (36125353246).

Almost surely, 2^72250706491 is an apocalyptic number.

72250706491 is a deficient number, since it is larger than the sum of its proper divisors (1).

72250706491 is an equidigital number, since it uses as much as digits as its factorization.

72250706491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 72250706491 in words is "seventy-two billion, two hundred fifty million, seven hundred six thousand, four hundred ninety-one".