85577386831 has 8 divisors (see below), whose sum is σ = 85699525824. Its totient is φ = 85455336960.

The previous prime is 85577386823. The next prime is 85577386901. The reversal of 85577386831 is 13868377558.

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

It is a cyclic number.

It is not a de Polignac number, because 85577386831 - 2³ = 85577386823 is a prime.

It is a super-2 number, since 2×85577386831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85577386831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85577386331) 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 7 ways as a sum of consecutive naturals, for example, 2032311 + ... + 2073991.

It is an arithmetic number, because the mean of its divisors is an integer number (10712440728).

Almost surely, 2^85577386831 is an apocalyptic number.

85577386831 is a deficient number, since it is larger than the sum of its proper divisors (122138993).

85577386831 is a wasteful number, since it uses less digits than its factorization.

85577386831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44561.

The product of its digits is 33868800, while the sum is 61.

The spelling of 85577386831 in words is "eighty-five billion, five hundred seventy-seven million, three hundred eighty-six thousand, eight hundred thirty-one".