255126662561 has 8 divisors (see below), whose sum is σ = 261673161984. Its totient is φ = 248626757920.

The previous prime is 255126662543. The next prime is 255126662569. The reversal of 255126662561 is 165266621552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255126662561 is a prime.

It is a super-2 number, since 2×255126662561² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255126662569) 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, 11637605 + ... + 11659506.

It is an arithmetic number, because the mean of its divisors is an integer number (32709145248).

Almost surely, 2^255126662561 is an apocalyptic number.

It is an amenable number.

255126662561 is a deficient number, since it is larger than the sum of its proper divisors (6546499423).

255126662561 is a wasteful number, since it uses less digits than its factorization.

255126662561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23297391.

The product of its digits is 1296000, while the sum is 47.

The spelling of 255126662561 in words is "two hundred fifty-five billion, one hundred twenty-six million, six hundred sixty-two thousand, five hundred sixty-one".