85611403188 has 36 divisors (see below), whose sum is σ = 220074516480. Its totient is φ = 28053453456.

The previous prime is 85611403169. The next prime is 85611403193. The reversal of 85611403188 is 88130411658.

85611403188 is a `hidden beast` number, since 8 + 5 + 61 + 1 + 403 + 188 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20151220 + ... + 20155467.

Almost surely, 2^85611403188 is an apocalyptic number.

It is an amenable number.

85611403188 is an abundant number, since it is smaller than the sum of its proper divisors (134463113292).

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

85611403188 is a wasteful number, since it uses less digits than its factorization.

85611403188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40306756 (or 40306751 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 85611403188 in words is "eighty-five billion, six hundred eleven million, four hundred three thousand, one hundred eighty-eight".