254742645843 has 48 divisors (see below), whose sum is σ = 454150692000. Its totient is φ = 140547645504.

The previous prime is 254742645779. The next prime is 254742645847. The reversal of 254742645843 is 348546247452.

It is a happy number.

254742645843 is a `hidden beast` number, since 2 + 54 + 7 + 4 + 2 + 6 + 4 + 584 + 3 = 666.

It is not a de Polignac number, because 254742645843 - 2⁶ = 254742645779 is a prime.

It is a super-2 number, since 2×254742645843² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 254742645843.

It is not an unprimeable number, because it can be changed into a prime (254742645847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3281448 + ... + 3358181.

It is an arithmetic number, because the mean of its divisors is an integer number (9461472750).

Almost surely, 2^254742645843 is an apocalyptic number.

254742645843 is a deficient number, since it is larger than the sum of its proper divisors (199408046157).

254742645843 is a wasteful number, since it uses less digits than its factorization.

254742645843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6639681 (or 6639668 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 54.

The spelling of 254742645843 in words is "two hundred fifty-four billion, seven hundred forty-two million, six hundred forty-five thousand, eight hundred forty-three".