85642770005 has 32 divisors (see below), whose sum is σ = 111250879488. Its totient is φ = 62916480000.

The previous prime is 85642770001. The next prime is 85642770023. The reversal of 85642770005 is 50007724658.

It is not a de Polignac number, because 85642770005 - 2² = 85642770001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85642770001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16165517 + ... + 16170813.

It is an arithmetic number, because the mean of its divisors is an integer number (3476589984).

Almost surely, 2^85642770005 is an apocalyptic number.

It is an amenable number.

85642770005 is a deficient number, since it is larger than the sum of its proper divisors (25608109483).

85642770005 is a wasteful number, since it uses less digits than its factorization.

85642770005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6557.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 85642770005 in words is "eighty-five billion, six hundred forty-two million, seven hundred seventy thousand, five".