83187572285 has 16 divisors (see below), whose sum is σ = 105996614256. Its totient is φ = 62457888768.

The previous prime is 83187572269. The next prime is 83187572291. The reversal of 83187572285 is 58227578138.

It can be written as a sum of positive squares in 8 ways, for example, as 6904446649 + 76283125636 = 83093^2 + 276194^2 .

It is a cyclic number.

It is not a de Polignac number, because 83187572285 - 2⁴ = 83187572269 is a prime.

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 83187572285.

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 15 ways as a sum of consecutive naturals, for example, 1356224 + ... + 1416233.

It is an arithmetic number, because the mean of its divisors is an integer number (6624788391).

Almost surely, 2^83187572285 is an apocalyptic number.

83187572285 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83187572285 is a deficient number, since it is larger than the sum of its proper divisors (22809041971).

83187572285 is a wasteful number, since it uses less digits than its factorization.

83187572285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772832.

The product of its digits is 7526400, while the sum is 56.

The spelling of 83187572285 in words is "eighty-three billion, one hundred eighty-seven million, five hundred seventy-two thousand, two hundred eighty-five".