254674511643 has 4 divisors (see below), whose sum is σ = 339566015528. Its totient is φ = 169783007760.

The previous prime is 254674511639. The next prime is 254674511669. The reversal of 254674511643 is 346115476452.

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

It is not a de Polignac number, because 254674511643 - 2² = 254674511639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254674511592 and 254674511601.

It is not an unprimeable number, because it can be changed into a prime (254674511603) 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, 42445751938 + ... + 42445751943.

It is an arithmetic number, because the mean of its divisors is an integer number (84891503882).

Almost surely, 2^254674511643 is an apocalyptic number.

254674511643 is a deficient number, since it is larger than the sum of its proper divisors (84891503885).

254674511643 is an equidigital number, since it uses as much as digits as its factorization.

254674511643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84891503884.

The product of its digits is 2419200, while the sum is 48.

The spelling of 254674511643 in words is "two hundred fifty-four billion, six hundred seventy-four million, five hundred eleven thousand, six hundred forty-three".