84886539813 has 10 divisors (see below), whose sum is σ = 126805818854. Its totient is φ = 56591026488.

The previous prime is 84886539791. The next prime is 84886539817. The reversal of 84886539813 is 31893568848.

84886539813 is a `hidden beast` number, since 8 + 4 + 8 + 86 + 539 + 8 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75365073729 + 9521466084 = 274527^2 + 97578^2 .

It is not a de Polignac number, because 84886539813 - 2³⁰ = 83812797989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84886539817) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 523990906 + ... + 523991067.

Almost surely, 2^84886539813 is an apocalyptic number.

It is an amenable number.

84886539813 is a deficient number, since it is larger than the sum of its proper divisors (41919279041).

84886539813 is a wasteful number, since it uses less digits than its factorization.

84886539813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047981985 (or 1047981976 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 63.

The spelling of 84886539813 in words is "eighty-four billion, eight hundred eighty-six million, five hundred thirty-nine thousand, eight hundred thirteen".