808891451831 has 2 divisors, whose sum is σ = 808891451832. Its totient is φ = 808891451830.

The previous prime is 808891451803. The next prime is 808891451917. The reversal of 808891451831 is 138154198808.

808891451831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 808891451831 - 2³⁴ = 791711582647 is a prime.

It is a super-2 number, since 2×808891451831² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808891451801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404445725915 + 404445725916.

It is an arithmetic number, because the mean of its divisors is an integer number (404445725916).

Almost surely, 2^808891451831 is an apocalyptic number.

808891451831 is a deficient number, since it is larger than the sum of its proper divisors (1).

808891451831 is an equidigital number, since it uses as much as digits as its factorization.

808891451831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2211840, while the sum is 56.

The spelling of 808891451831 in words is "eight hundred eight billion, eight hundred ninety-one million, four hundred fifty-one thousand, eight hundred thirty-one".