85386405079 has 2 divisors, whose sum is σ = 85386405080. Its totient is φ = 85386405078.

The previous prime is 85386405073. The next prime is 85386405107. The reversal of 85386405079 is 97050468358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85386405079 - 2²⁵ = 85352850647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85386405073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42693202539 + 42693202540.

It is an arithmetic number, because the mean of its divisors is an integer number (42693202540).

Almost surely, 2^85386405079 is an apocalyptic number.

85386405079 is a deficient number, since it is larger than the sum of its proper divisors (1).

85386405079 is an equidigital number, since it uses as much as digits as its factorization.

85386405079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 85386405079 in words is "eighty-five billion, three hundred eighty-six million, four hundred five thousand, seventy-nine".