255344402642 has 12 divisors (see below), whose sum is σ = 445549927230. Its totient is φ = 109433315376.

The previous prime is 255344402623. The next prime is 255344402699. The reversal of 255344402642 is 246204443552.

It can be written as a sum of positive squares in only one way, i.e., 254277139081 + 1067263561 = 504259^2 + 32669^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255344402642.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1302777467 + ... + 1302777662.

Almost surely, 2^255344402642 is an apocalyptic number.

255344402642 is a deficient number, since it is larger than the sum of its proper divisors (190205524588).

255344402642 is a wasteful number, since it uses less digits than its factorization.

255344402642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605555145 (or 2605555138 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 41.

The spelling of 255344402642 in words is "two hundred fifty-five billion, three hundred forty-four million, four hundred two thousand, six hundred forty-two".