285800198742642 has 32 divisors (see below), whose sum is σ = 605283929066304. Its totient is φ = 89653921702400.

The previous prime is 285800198742629. The next prime is 285800198742649. The reversal of 285800198742642 is 246247891008582.

It is not an unprimeable number, because it can be changed into a prime (285800198742649) 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 15 ways as a sum of consecutive naturals, for example, 137805459 + ... + 139864022.

It is an arithmetic number, because the mean of its divisors is an integer number (18915122783322).

Almost surely, 2^{285800198742642} is an apocalyptic number.

285800198742642 is an abundant number, since it is smaller than the sum of its proper divisors (319483730323662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285800198742642 is a wasteful number, since it uses less digits than its factorization.

285800198742642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277679594.

The product of its (nonzero) digits is 123863040, while the sum is 66.

The spelling of 285800198742642 in words is "two hundred eighty-five trillion, eight hundred billion, one hundred ninety-eight million, seven hundred forty-two thousand, six hundred forty-two".