85885910779 has 2 divisors, whose sum is σ = 85885910780. Its totient is φ = 85885910778.

The previous prime is 85885910771. The next prime is 85885910801. The reversal of 85885910779 is 97701958858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85885910779 - 2³ = 85885910771 is a prime.

It is a super-3 number, since 3×85885910779³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (85885910771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42942955389 + 42942955390.

It is an arithmetic number, because the mean of its divisors is an integer number (42942955390).

Almost surely, 2^85885910779 is an apocalyptic number.

85885910779 is a deficient number, since it is larger than the sum of its proper divisors (1).

85885910779 is an equidigital number, since it uses as much as digits as its factorization.

85885910779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 67.

The spelling of 85885910779 in words is "eighty-five billion, eight hundred eighty-five million, nine hundred ten thousand, seven hundred seventy-nine".