85874351990 has 64 divisors (see below), whose sum is σ = 191609566848. Its totient is φ = 27034828800.

The previous prime is 85874351989. The next prime is 85874351999. The reversal of 85874351990 is 9915347858.

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

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 831251 + ... + 928830.

It is an arithmetic number, because the mean of its divisors is an integer number (2993899482).

Almost surely, 2^85874351990 is an apocalyptic number.

85874351990 is an abundant number, since it is smaller than the sum of its proper divisors (105735214858).

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

85874351990 is a wasteful number, since it uses less digits than its factorization.

85874351990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760153.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 85874351990 in words is "eighty-five billion, eight hundred seventy-four million, three hundred fifty-one thousand, nine hundred ninety".