285591136429 has 2 divisors, whose sum is σ = 285591136430. Its totient is φ = 285591136428.

The previous prime is 285591136427. The next prime is 285591136463. The reversal of 285591136429 is 924631195582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231442777225 + 54148359204 = 481085^2 + 232698^2 .

It is a cyclic number.

It is not a de Polignac number, because 285591136429 - 2¹ = 285591136427 is a prime.

Together with 285591136427, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 285591136429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285591136427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142795568214 + 142795568215.

It is an arithmetic number, because the mean of its divisors is an integer number (142795568215).

Almost surely, 2^285591136429 is an apocalyptic number.

It is an amenable number.

285591136429 is a deficient number, since it is larger than the sum of its proper divisors (1).

285591136429 is an equidigital number, since it uses as much as digits as its factorization.

285591136429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 55.

The spelling of 285591136429 in words is "two hundred eighty-five billion, five hundred ninety-one million, one hundred thirty-six thousand, four hundred twenty-nine".