255391662798 has 64 divisors (see below), whose sum is σ = 590623488000. Its totient is φ = 81702748512.

The previous prime is 255391662749. The next prime is 255391662811. The reversal of 255391662798 is 897266193552.

255391662798 is a `hidden beast` number, since 2 + 5 + 539 + 1 + 6 + 6 + 2 + 7 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226758 + ... + 749801.

It is an arithmetic number, because the mean of its divisors is an integer number (9228492000).

Almost surely, 2^255391662798 is an apocalyptic number.

255391662798 is an abundant number, since it is smaller than the sum of its proper divisors (335231825202).

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

255391662798 is a wasteful number, since it uses less digits than its factorization.

255391662798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976766 (or 976760 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The spelling of 255391662798 in words is "two hundred fifty-five billion, three hundred ninety-one million, six hundred sixty-two thousand, seven hundred ninety-eight".