254405322435551 has 4 divisors (see below), whose sum is σ = 290748939926352. Its totient is φ = 218061704944752.

The previous prime is 254405322435547. The next prime is 254405322435553. The reversal of 254405322435551 is 155534223504452.

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 254405322435551 - 2² = 254405322435547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254405322435551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254405322435553) 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, 18171808745390 + ... + 18171808745403.

It is an arithmetic number, because the mean of its divisors is an integer number (72687234981588).

Almost surely, 2^{254405322435551} is an apocalyptic number.

254405322435551 is a deficient number, since it is larger than the sum of its proper divisors (36343617490801).

254405322435551 is an equidigital number, since it uses as much as digits as its factorization.

254405322435551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36343617490800.

The product of its (nonzero) digits is 14400000, while the sum is 50.

The spelling of 254405322435551 in words is "two hundred fifty-four trillion, four hundred five billion, three hundred twenty-two million, four hundred thirty-five thousand, five hundred fifty-one".