86513122687 has 2 divisors, whose sum is σ = 86513122688. Its totient is φ = 86513122686.

The previous prime is 86513122681. The next prime is 86513122753. The reversal of 86513122687 is 78622131568.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86513122687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86513122687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86513122681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43256561343 + 43256561344.

It is an arithmetic number, because the mean of its divisors is an integer number (43256561344).

Almost surely, 2^86513122687 is an apocalyptic number.

86513122687 is a deficient number, since it is larger than the sum of its proper divisors (1).

86513122687 is an equidigital number, since it uses as much as digits as its factorization.

86513122687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The spelling of 86513122687 in words is "eighty-six billion, five hundred thirteen million, one hundred twenty-two thousand, six hundred eighty-seven".