85666760944 has 20 divisors (see below), whose sum is σ = 175742841024. Its totient is φ = 40313769728.

The previous prime is 85666760923. The next prime is 85666760947. The reversal of 85666760944 is 44906766658.

It is a super-2 number, since 2×85666760944² (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 (85666760947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157475392 + ... + 157475935.

Almost surely, 2^85666760944 is an apocalyptic number.

It is an amenable number.

85666760944 is an abundant number, since it is smaller than the sum of its proper divisors (90076080080).

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

85666760944 is a wasteful number, since it uses less digits than its factorization.

85666760944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314951352 (or 314951346 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 61.

The spelling of 85666760944 in words is "eighty-five billion, six hundred sixty-six million, seven hundred sixty thousand, nine hundred forty-four".