852994437885 has 24 divisors (see below), whose sum is σ = 1565495675640. Its totient is φ = 428169756672.

The previous prime is 852994437871. The next prime is 852994437923. The reversal of 852994437885 is 588734499258.

852994437885 is a `hidden beast` number, since 8 + 5 + 29 + 94 + 437 + 8 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 371751161796 + 481243276089 = 609714^2 + 693717^2 .

It is not a de Polignac number, because 852994437885 - 2⁵ = 852994437853 is a prime.

It is a super-2 number, since 2×852994437885² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 557511940 + ... + 557513469.

It is an arithmetic number, because the mean of its divisors is an integer number (65228986485).

Almost surely, 2^852994437885 is an apocalyptic number.

852994437885 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

852994437885 is a deficient number, since it is larger than the sum of its proper divisors (712501237755).

852994437885 is a wasteful number, since it uses less digits than its factorization.

852994437885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115025437 (or 1115025434 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 72.

The spelling of 852994437885 in words is "eight hundred fifty-two billion, nine hundred ninety-four million, four hundred thirty-seven thousand, eight hundred eighty-five".