85166935880 has 64 divisors (see below), whose sum is σ = 206422518960. Its totient is φ = 31437646848.

The previous prime is 85166935879. The next prime is 85166935883. The reversal of 85166935880 is 8853966158.

It can be written as a sum of positive squares in 8 ways, for example, as 66459808804 + 18707127076 = 257798^2 + 136774^2 .

It is not an unprimeable number, because it can be changed into a prime (85166935883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2066354 + ... + 2107166.

Almost surely, 2^85166935880 is an apocalyptic number.

It is an amenable number.

85166935880 is an abundant number, since it is smaller than the sum of its proper divisors (121255583080).

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

85166935880 is a wasteful number, since it uses less digits than its factorization.

85166935880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44850 (or 44846 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 85166935880 in words is "eighty-five billion, one hundred sixty-six million, nine hundred thirty-five thousand, eight hundred eighty".