254454330021 has 16 divisors (see below), whose sum is σ = 358551728640. Its totient is φ = 160067718000.

The previous prime is 254454329959. The next prime is 254454330023. The reversal of 254454330021 is 120033454452.

It is not a de Polignac number, because 254454330021 - 2⁷ = 254454329893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254454330023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8878345 + ... + 8906958.

It is an arithmetic number, because the mean of its divisors is an integer number (22409483040).

Almost surely, 2^254454330021 is an apocalyptic number.

It is an amenable number.

254454330021 is a deficient number, since it is larger than the sum of its proper divisors (104097398619).

254454330021 is a wasteful number, since it uses less digits than its factorization.

254454330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17785576.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 254454330021 its reverse (120033454452), we get a palindrome (374487784473).

The spelling of 254454330021 in words is "two hundred fifty-four billion, four hundred fifty-four million, three hundred thirty thousand, twenty-one".