84517536931 has 2 divisors, whose sum is σ = 84517536932. Its totient is φ = 84517536930.

The previous prime is 84517536833. The next prime is 84517536941. The reversal of 84517536931 is 13963571548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84517536931 - 2⁹ = 84517536419 is a prime.

It is a super-2 number, since 2×84517536931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84517536941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42258768465 + 42258768466.

It is an arithmetic number, because the mean of its divisors is an integer number (42258768466).

Almost surely, 2^84517536931 is an apocalyptic number.

84517536931 is a deficient number, since it is larger than the sum of its proper divisors (1).

84517536931 is an equidigital number, since it uses as much as digits as its factorization.

84517536931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 52.

The spelling of 84517536931 in words is "eighty-four billion, five hundred seventeen million, five hundred thirty-six thousand, nine hundred thirty-one".