864100086431 has 2 divisors, whose sum is σ = 864100086432. Its totient is φ = 864100086430.

The previous prime is 864100086419. The next prime is 864100086449. The reversal of 864100086431 is 134680001468.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864100086431 is a prime.

It is a super-2 number, since 2×864100086431² (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 (864100086401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432050043215 + 432050043216.

It is an arithmetic number, because the mean of its divisors is an integer number (432050043216).

Almost surely, 2^864100086431 is an apocalyptic number.

864100086431 is a deficient number, since it is larger than the sum of its proper divisors (1).

864100086431 is an equidigital number, since it uses as much as digits as its factorization.

864100086431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

Adding to 864100086431 its reverse (134680001468), we get a palindrome (998780087899).

The spelling of 864100086431 in words is "eight hundred sixty-four billion, one hundred million, eighty-six thousand, four hundred thirty-one".