85639031774 has 8 divisors (see below), whose sum is σ = 128797489560. Its totient is φ = 42706535256.

The previous prime is 85639031771. The next prime is 85639031809. The reversal of 85639031774 is 47713093658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85639031771) 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, 56489369 + ... + 56490884.

It is an arithmetic number, because the mean of its divisors is an integer number (16099686195).

Almost surely, 2^85639031774 is an apocalyptic number.

85639031774 is a deficient number, since it is larger than the sum of its proper divisors (43158457786).

85639031774 is a wasteful number, since it uses less digits than its factorization.

85639031774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112980634.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 85639031774 in words is "eighty-five billion, six hundred thirty-nine million, thirty-one thousand, seven hundred seventy-four".