86539221513 has 12 divisors (see below), whose sum is σ = 125029506420. Its totient is φ = 57679702656.

The previous prime is 86539221427. The next prime is 86539221533. The reversal of 86539221513 is 31512293568.

86539221513 is a `hidden beast` number, since 86 + 5 + 39 + 2 + 21 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12270435984 + 74268785529 = 110772^2 + 272523^2 .

It is not a de Polignac number, because 86539221513 - 2¹⁰ = 86539220489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86539221533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1050756 + ... + 1130117.

It is an arithmetic number, because the mean of its divisors is an integer number (10419125535).

Almost surely, 2^86539221513 is an apocalyptic number.

It is an amenable number.

86539221513 is a deficient number, since it is larger than the sum of its proper divisors (38490284907).

86539221513 is a wasteful number, since it uses less digits than its factorization.

86539221513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185288 (or 2185285 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 86539221513 in words is "eighty-six billion, five hundred thirty-nine million, two hundred twenty-one thousand, five hundred thirteen".