255438302646 has 16 divisors (see below), whose sum is σ = 514605633264. Its totient is φ = 84524596224.

The previous prime is 255438302621. The next prime is 255438302659. The reversal of 255438302646 is 646203834552.

It is a junction number, because it is equal to n+sod(n) for n = 255438302595 and 255438302604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155375275 + ... + 155376918.

It is an arithmetic number, because the mean of its divisors is an integer number (32162852079).

Almost surely, 2^255438302646 is an apocalyptic number.

255438302646 is an abundant number, since it is smaller than the sum of its proper divisors (259167330618).

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

255438302646 is a wasteful number, since it uses less digits than its factorization.

255438302646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310752335.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 255438302646 in words is "two hundred fifty-five billion, four hundred thirty-eight million, three hundred two thousand, six hundred forty-six".