74989718831 has 2 divisors, whose sum is σ = 74989718832. Its totient is φ = 74989718830.

The previous prime is 74989718803. The next prime is 74989718849. The reversal of 74989718831 is 13881798947.

It is a strong prime.

It is an emirp because it is prime and its reverse (13881798947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74989718831 - 2⁶ = 74989718767 is a prime.

It is a super-2 number, since 2×74989718831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74989718801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37494859415 + 37494859416.

It is an arithmetic number, because the mean of its divisors is an integer number (37494859416).

Almost surely, 2^74989718831 is an apocalyptic number.

74989718831 is a deficient number, since it is larger than the sum of its proper divisors (1).

74989718831 is an equidigital number, since it uses as much as digits as its factorization.

74989718831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 65.

The spelling of 74989718831 in words is "seventy-four billion, nine hundred eighty-nine million, seven hundred eighteen thousand, eight hundred thirty-one".