72247974871 has 2 divisors, whose sum is σ = 72247974872. Its totient is φ = 72247974870.

The previous prime is 72247974857. The next prime is 72247974899. The reversal of 72247974871 is 17847974227.

It is a weak prime.

It is an emirp because it is prime and its reverse (17847974227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72247974871 - 2¹⁵ = 72247942103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72247974811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36123987435 + 36123987436.

It is an arithmetic number, because the mean of its divisors is an integer number (36123987436).

Almost surely, 2^72247974871 is an apocalyptic number.

72247974871 is a deficient number, since it is larger than the sum of its proper divisors (1).

72247974871 is an equidigital number, since it uses as much as digits as its factorization.

72247974871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11063808, while the sum is 58.

The spelling of 72247974871 in words is "seventy-two billion, two hundred forty-seven million, nine hundred seventy-four thousand, eight hundred seventy-one".