254904819951 has 4 divisors (see below), whose sum is σ = 339873093272. Its totient is φ = 169936546632.

The previous prime is 254904819893. The next prime is 254904819973. The reversal of 254904819951 is 159918409452.

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

It is not a de Polignac number, because 254904819951 - 2⁷ = 254904819823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254904819891 and 254904819900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254504819951) 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, 42484136656 + ... + 42484136661.

It is an arithmetic number, because the mean of its divisors is an integer number (84968273318).

Almost surely, 2^254904819951 is an apocalyptic number.

254904819951 is a deficient number, since it is larger than the sum of its proper divisors (84968273321).

254904819951 is an equidigital number, since it uses as much as digits as its factorization.

254904819951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84968273320.

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 254904819951 in words is "two hundred fifty-four billion, nine hundred four million, eight hundred nineteen thousand, nine hundred fifty-one".