877638410431 has 2 divisors, whose sum is σ = 877638410432. Its totient is φ = 877638410430.

The previous prime is 877638410417. The next prime is 877638410497. The reversal of 877638410431 is 134014836778.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-877638410431 is a prime.

It is a super-2 number, since 2×877638410431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (877638417431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438819205215 + 438819205216.

It is an arithmetic number, because the mean of its divisors is an integer number (438819205216).

Almost surely, 2^877638410431 is an apocalyptic number.

877638410431 is a deficient number, since it is larger than the sum of its proper divisors (1).

877638410431 is an equidigital number, since it uses as much as digits as its factorization.

877638410431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 877638410431 in words is "eight hundred seventy-seven billion, six hundred thirty-eight million, four hundred ten thousand, four hundred thirty-one".