255577090101 has 4 divisors (see below), whose sum is σ = 340769453472. Its totient is φ = 170384726732.

The previous prime is 255577090073. The next prime is 255577090127. The reversal of 255577090101 is 101090775552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255577090101 - 2⁹ = 255577089589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255577070101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42596181681 + ... + 42596181686.

It is an arithmetic number, because the mean of its divisors is an integer number (85192363368).

Almost surely, 2^255577090101 is an apocalyptic number.

It is an amenable number.

255577090101 is a deficient number, since it is larger than the sum of its proper divisors (85192363371).

255577090101 is an equidigital number, since it uses as much as digits as its factorization.

255577090101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85192363370.

The product of its (nonzero) digits is 110250, while the sum is 42.

The spelling of 255577090101 in words is "two hundred fifty-five billion, five hundred seventy-seven million, ninety thousand, one hundred one".