255857711005238 has 4 divisors (see below), whose sum is σ = 383786566507860. Its totient is φ = 127928855502618.

The previous prime is 255857711005213. The next prime is 255857711005249. The reversal of 255857711005238 is 832500117758552.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63964427751308 + ... + 63964427751311.

It is an arithmetic number, because the mean of its divisors is an integer number (95946641626965).

Almost surely, 2^{255857711005238} is an apocalyptic number.

255857711005238 is a deficient number, since it is larger than the sum of its proper divisors (127928855502622).

255857711005238 is a wasteful number, since it uses less digits than its factorization.

255857711005238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127928855502621.

The product of its (nonzero) digits is 23520000, while the sum is 59.

The spelling of 255857711005238 in words is "two hundred fifty-five trillion, eight hundred fifty-seven billion, seven hundred eleven million, five thousand, two hundred thirty-eight".