85638770178 has 32 divisors (see below), whose sum is σ = 184483203072. Its totient is φ = 26346038400.

The previous prime is 85638770153. The next prime is 85638770179. The reversal of 85638770178 is 87107783658.

It is not an unprimeable number, because it can be changed into a prime (85638770179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401598 + ... + 576678.

It is an arithmetic number, because the mean of its divisors is an integer number (5765100096).

Almost surely, 2^85638770178 is an apocalyptic number.

85638770178 is an abundant number, since it is smaller than the sum of its proper divisors (98844432894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85638770178 is a wasteful number, since it uses less digits than its factorization.

85638770178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181370.

The product of its (nonzero) digits is 15805440, while the sum is 60.

The spelling of 85638770178 in words is "eighty-five billion, six hundred thirty-eight million, seven hundred seventy thousand, one hundred seventy-eight".