86623815137 has 2 divisors, whose sum is σ = 86623815138. Its totient is φ = 86623815136.

The previous prime is 86623814989. The next prime is 86623815149. The reversal of 86623815137 is 73151832668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86623673761 + 141376 = 294319^2 + 376^2 .

It is a cyclic number.

It is not a de Polignac number, because 86623815137 - 2⁸ = 86623814881 is a prime.

It is not a weakly prime, because it can be changed into another prime (86623815167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43311907568 + 43311907569.

It is an arithmetic number, because the mean of its divisors is an integer number (43311907569).

Almost surely, 2^86623815137 is an apocalyptic number.

It is an amenable number.

86623815137 is a deficient number, since it is larger than the sum of its proper divisors (1).

86623815137 is an equidigital number, since it uses as much as digits as its factorization.

86623815137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The spelling of 86623815137 in words is "eighty-six billion, six hundred twenty-three million, eight hundred fifteen thousand, one hundred thirty-seven".