86136393779 has 2 divisors, whose sum is σ = 86136393780. Its totient is φ = 86136393778.

The previous prime is 86136393709. The next prime is 86136393799. The reversal of 86136393779 is 97739363168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86136393779 - 2⁸ = 86136393523 is a prime.

It is not a weakly prime, because it can be changed into another prime (86136393709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43068196889 + 43068196890.

It is an arithmetic number, because the mean of its divisors is an integer number (43068196890).

Almost surely, 2^86136393779 is an apocalyptic number.

86136393779 is a deficient number, since it is larger than the sum of its proper divisors (1).

86136393779 is an equidigital number, since it uses as much as digits as its factorization.

86136393779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 62.

The spelling of 86136393779 in words is "eighty-six billion, one hundred thirty-six million, three hundred ninety-three thousand, seven hundred seventy-nine".