255471717077 has 4 divisors (see below), whose sum is σ = 259801746240. Its totient is φ = 251141687916.

The previous prime is 255471717043. The next prime is 255471717091. The reversal of 255471717077 is 770717174552.

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 255471717077 - 2⁶ = 255471717013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255471017077) 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, 2165014493 + ... + 2165014610.

It is an arithmetic number, because the mean of its divisors is an integer number (64950436560).

Almost surely, 2^255471717077 is an apocalyptic number.

It is an amenable number.

255471717077 is a deficient number, since it is larger than the sum of its proper divisors (4330029163).

255471717077 is an equidigital number, since it uses as much as digits as its factorization.

255471717077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330029162.

The product of its (nonzero) digits is 3361400, while the sum is 53.

The spelling of 255471717077 in words is "two hundred fifty-five billion, four hundred seventy-one million, seven hundred seventeen thousand, seventy-seven".