86611086940639 has 2 divisors, whose sum is σ = 86611086940640. Its totient is φ = 86611086940638.

The previous prime is 86611086940601. The next prime is 86611086940691. The reversal of 86611086940639 is 93604968011668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86611086940639 - 2³⁵ = 86576727202271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86611086940139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43305543470319 + 43305543470320.

It is an arithmetic number, because the mean of its divisors is an integer number (43305543470320).

Almost surely, 2^{86611086940639} is an apocalyptic number.

86611086940639 is a deficient number, since it is larger than the sum of its proper divisors (1).

86611086940639 is an equidigital number, since it uses as much as digits as its factorization.

86611086940639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80621568, while the sum is 67.

The spelling of 86611086940639 in words is "eighty-six trillion, six hundred eleven billion, eighty-six million, nine hundred forty thousand, six hundred thirty-nine".