255870089781 has 8 divisors (see below), whose sum is σ = 344993379840. Its totient is φ = 168663429792.

The previous prime is 255870089773. The next prime is 255870089809. The reversal of 255870089781 is 187980078552.

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

It is not a de Polignac number, because 255870089781 - 2³ = 255870089773 is a prime.

It is a super-2 number, since 2×255870089781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255870089681) 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, 479157205 + ... + 479157738.

It is an arithmetic number, because the mean of its divisors is an integer number (43124172480).

Almost surely, 2^255870089781 is an apocalyptic number.

It is an amenable number.

255870089781 is a deficient number, since it is larger than the sum of its proper divisors (89123290059).

255870089781 is an equidigital number, since it uses as much as digits as its factorization.

255870089781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958315035.

The product of its (nonzero) digits is 11289600, while the sum is 60.

The spelling of 255870089781 in words is "two hundred fifty-five billion, eight hundred seventy million, eighty-nine thousand, seven hundred eighty-one".