85642373656 has 96 divisors (see below), whose sum is σ = 189207984240. Its totient is φ = 36232691712.

The previous prime is 85642373651. The next prime is 85642373683. The reversal of 85642373656 is 65637324658.

It is a junction number, because it is equal to n+sod(n) for n = 85642373597 and 85642373606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85642373651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11380311 + ... + 11387833.

Almost surely, 2^85642373656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85642373656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94603992120).

85642373656 is an abundant number, since it is smaller than the sum of its proper divisors (103565610584).

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

85642373656 is a wasteful number, since it uses less digits than its factorization.

85642373656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7913 (or 7902 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 55.

The spelling of 85642373656 in words is "eighty-five billion, six hundred forty-two million, three hundred seventy-three thousand, six hundred fifty-six".