255958770065 has 8 divisors (see below), whose sum is σ = 317741921640. Its totient is φ = 197706084352.

The previous prime is 255958770061. The next prime is 255958770203. The reversal of 255958770065 is 560077859552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58463854849 + 197494915216 = 241793^2 + 444404^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 255958770065 - 2² = 255958770061 is a prime.

It is a super-3 number, since 3×255958770065³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255958769986 and 255958770013.

It is not an unprimeable number, because it can be changed into a prime (255958770061) 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, 882616304 + ... + 882616593.

It is an arithmetic number, because the mean of its divisors is an integer number (39717740205).

Almost surely, 2^255958770065 is an apocalyptic number.

It is an amenable number.

255958770065 is a deficient number, since it is larger than the sum of its proper divisors (61783151575).

255958770065 is a wasteful number, since it uses less digits than its factorization.

255958770065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765232931.

The product of its (nonzero) digits is 26460000, while the sum is 59.

The spelling of 255958770065 in words is "two hundred fifty-five billion, nine hundred fifty-eight million, seven hundred seventy thousand, sixty-five".