255328055551 has 4 divisors (see below), whose sum is σ = 261265917352. Its totient is φ = 249390193752.

The previous prime is 255328055519. The next prime is 255328055597. The reversal of 255328055551 is 155550823552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255328055551 - 2⁵ = 255328055519 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 (255328655551) 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, 2968930836 + ... + 2968930921.

It is an arithmetic number, because the mean of its divisors is an integer number (65316479338).

Almost surely, 2^255328055551 is an apocalyptic number.

255328055551 is a deficient number, since it is larger than the sum of its proper divisors (5937861801).

255328055551 is an equidigital number, since it uses as much as digits as its factorization.

255328055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937861800.

The product of its (nonzero) digits is 1500000, while the sum is 46.

The spelling of 255328055551 in words is "two hundred fifty-five billion, three hundred twenty-eight million, fifty-five thousand, five hundred fifty-one".