85874351992 has 64 divisors (see below), whose sum is σ = 189949304160. Its totient is φ = 35881574400.

The previous prime is 85874351989. The next prime is 85874351999. The reversal of 85874351992 is 29915347858.

It is a self number, because there is not a number n which added to its sum of digits gives 85874351992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85874351999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119968 + ... + 431440.

Almost surely, 2^85874351992 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 85874351992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94974652080).

85874351992 is an abundant number, since it is smaller than the sum of its proper divisors (104074952168).

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

85874351992 is a wasteful number, since it uses less digits than its factorization.

85874351992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311744 (or 311740 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 61.

The spelling of 85874351992 in words is "eighty-five billion, eight hundred seventy-four million, three hundred fifty-one thousand, nine hundred ninety-two".