85779097252 has 12 divisors (see below), whose sum is σ = 150116950620. Its totient is φ = 42888539936.

The previous prime is 85779097247. The next prime is 85779097273. The reversal of 85779097252 is 25279097758.

It can be written as a sum of positive squares in 2 ways, for example, as 26835026596 + 58944070656 = 163814^2 + 242784^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 41227 + ... + 416242.

It is an arithmetic number, because the mean of its divisors is an integer number (12509745885).

Almost surely, 2^85779097252 is an apocalyptic number.

It is an amenable number.

85779097252 is a deficient number, since it is larger than the sum of its proper divisors (64337853368).

85779097252 is a wasteful number, since it uses less digits than its factorization.

85779097252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504350 (or 504348 counting only the distinct ones).

The product of its (nonzero) digits is 22226400, while the sum is 61.

The spelling of 85779097252 in words is "eighty-five billion, seven hundred seventy-nine million, ninety-seven thousand, two hundred fifty-two".