85601989116 has 72 divisors (see below), whose sum is σ = 247331337344. Its totient is φ = 24454081440.

The previous prime is 85601989111. The next prime is 85601989127. The reversal of 85601989116 is 61198910658.

It is a super-2 number, since 2×85601989116² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85601989111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1997571 + ... + 2039973.

Almost surely, 2^85601989116 is an apocalyptic number.

It is an amenable number.

85601989116 is an abundant number, since it is smaller than the sum of its proper divisors (161729348228).

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

85601989116 is a wasteful number, since it uses less digits than its factorization.

85601989116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50431 (or 50426 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 85601989116 in words is "eighty-five billion, six hundred one million, nine hundred eighty-nine thousand, one hundred sixteen".