255154424451551 has 4 divisors (see below), whose sum is σ = 256564117404504. Its totient is φ = 253744731498600.

The previous prime is 255154424451517. The next prime is 255154424451571. The reversal of 255154424451551 is 155154424451552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255154424451551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255154424451493 and 255154424451502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255154424451571) 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, 704846476205 + ... + 704846476566.

It is an arithmetic number, because the mean of its divisors is an integer number (64141029351126).

Almost surely, 2^{255154424451551} is an apocalyptic number.

255154424451551 is a deficient number, since it is larger than the sum of its proper divisors (1409692952953).

255154424451551 is a wasteful number, since it uses less digits than its factorization.

255154424451551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409692952952.

The product of its digits is 16000000, while the sum is 53.

Subtracting from 255154424451551 its reverse (155154424451552), we obtain a palindrome (99999999999999).

The spelling of 255154424451551 in words is "two hundred fifty-five trillion, one hundred fifty-four billion, four hundred twenty-four million, four hundred fifty-one thousand, five hundred fifty-one".