255261055191 has 8 divisors (see below), whose sum is σ = 342796621440. Its totient is φ = 168949762872.

The previous prime is 255261055171. The next prime is 255261055199. The reversal of 255261055191 is 191550162552.

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

It is not a de Polignac number, because 255261055191 - 2⁹ = 255261054679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255261055199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306067995 + ... + 306068828.

It is an arithmetic number, because the mean of its divisors is an integer number (42849577680).

Almost surely, 2^255261055191 is an apocalyptic number.

255261055191 is a deficient number, since it is larger than the sum of its proper divisors (87535566249).

255261055191 is a wasteful number, since it uses less digits than its factorization.

255261055191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612136965.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 255261055191 in words is "two hundred fifty-five billion, two hundred sixty-one million, fifty-five thousand, one hundred ninety-one".