85434264631 has 2 divisors, whose sum is σ = 85434264632. Its totient is φ = 85434264630.

The previous prime is 85434264611. The next prime is 85434264679. The reversal of 85434264631 is 13646243458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85434264631 - 2¹⁷ = 85434133559 is a prime.

It is a super-2 number, since 2×85434264631² (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 (85434264611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42717132315 + 42717132316.

It is an arithmetic number, because the mean of its divisors is an integer number (42717132316).

Almost surely, 2^85434264631 is an apocalyptic number.

85434264631 is a deficient number, since it is larger than the sum of its proper divisors (1).

85434264631 is an equidigital number, since it uses as much as digits as its factorization.

85434264631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 46.

The spelling of 85434264631 in words is "eighty-five billion, four hundred thirty-four million, two hundred sixty-four thousand, six hundred thirty-one".