255657890713902 has 8 divisors (see below), whose sum is σ = 511315781427816. Its totient is φ = 85219296904632.

The previous prime is 255657890713831. The next prime is 255657890713943. The reversal of 255657890713902 is 209317098756552.

It is a sphenic number, since it is the product of 3 distinct primes.

255657890713902 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21304824226153 + ... + 21304824226164.

It is an arithmetic number, because the mean of its divisors is an integer number (63914472678477).

Almost surely, 2^{255657890713902} is an apocalyptic number.

255657890713902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255657890713902 is a wasteful number, since it uses less digits than its factorization.

255657890713902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42609648452322.

The product of its (nonzero) digits is 285768000, while the sum is 69.

The spelling of 255657890713902 in words is "two hundred fifty-five trillion, six hundred fifty-seven billion, eight hundred ninety million, seven hundred thirteen thousand, nine hundred two".