85611248836 has 9 divisors (see below), whose sum is σ = 149820709549. Its totient is φ = 42805331824.

The previous prime is 85611248831. The next prime is 85611248837. The reversal of 85611248836 is 63884211658.

It is a happy number.

The square root of 85611248836 is 292594.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4873436100 + 80737812736 = 69810^2 + 284144^2 .

It is a super-2 number, since 2×85611248836² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85611248831) 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 2 ways as a sum of consecutive naturals, for example, 512040 + ... + 658336.

Almost surely, 2^85611248836 is an apocalyptic number.

85611248836 is the 292594-th square number.

It is an amenable number.

85611248836 is a deficient number, since it is larger than the sum of its proper divisors (64209460713).

85611248836 is an frugal number, since it uses more digits than its factorization.

85611248836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292598 (or 146299 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 52.

The spelling of 85611248836 in words is "eighty-five billion, six hundred eleven million, two hundred forty-eight thousand, eight hundred thirty-six".