85622668613 has 2 divisors, whose sum is σ = 85622668614. Its totient is φ = 85622668612.

The previous prime is 85622668591. The next prime is 85622668633. The reversal of 85622668613 is 31686622658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72273870244 + 13348798369 = 268838^2 + 115537^2 .

It is a cyclic number.

It is not a de Polignac number, because 85622668613 - 2⁸ = 85622668357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85622668633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42811334306 + 42811334307.

It is an arithmetic number, because the mean of its divisors is an integer number (42811334307).

Almost surely, 2^85622668613 is an apocalyptic number.

It is an amenable number.

85622668613 is a deficient number, since it is larger than the sum of its proper divisors (1).

85622668613 is an equidigital number, since it uses as much as digits as its factorization.

85622668613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 53.

The spelling of 85622668613 in words is "eighty-five billion, six hundred twenty-two million, six hundred sixty-eight thousand, six hundred thirteen".