254131443540221 has 12 divisors (see below), whose sum is σ = 278667091126080. Its totient is φ = 231613467518160.

The previous prime is 254131443540217. The next prime is 254131443540253. The reversal of 254131443540221 is 122045344131452.

It is not a de Polignac number, because 254131443540221 - 2² = 254131443540217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254131443540421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9517305335 + ... + 9517332036.

It is an arithmetic number, because the mean of its divisors is an integer number (23222257593840).

Almost surely, 2^{254131443540221} is an apocalyptic number.

It is an amenable number.

254131443540221 is a deficient number, since it is larger than the sum of its proper divisors (24535647585859).

254131443540221 is a wasteful number, since it uses less digits than its factorization.

254131443540221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19034637476 (or 19034637463 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 254131443540221 its reverse (122045344131452), we get a palindrome (376176787671673).

The spelling of 254131443540221 in words is "two hundred fifty-four trillion, one hundred thirty-one billion, four hundred forty-three million, five hundred forty thousand, two hundred twenty-one".