454140244104021 has 6 divisors (see below), whose sum is σ = 655980352594710. Its totient is φ = 302760162736008.

The previous prime is 454140244104013. The next prime is 454140244104031. The reversal of 454140244104021 is 120401442041454.

454140244104021 is a `hidden beast` number, since 4 + 5 + 4 + 1 + 4 + 0 + 244 + 1 + 0 + 402 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 450053737380900 + 4086506723121 = 21214470^2 + 2021511^2 .

It is not a de Polignac number, because 454140244104021 - 2³ = 454140244104013 is a prime.

It is a super-2 number, since 2×454140244104021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454140244104031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25230013561326 + ... + 25230013561343.

It is an arithmetic number, because the mean of its divisors is an integer number (109330058765785).

Almost surely, 2^{454140244104021} is an apocalyptic number.

It is an amenable number.

454140244104021 is a deficient number, since it is larger than the sum of its proper divisors (201840108490689).

454140244104021 is a wasteful number, since it uses less digits than its factorization.

454140244104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50460027122675 (or 50460027122672 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 36.

Adding to 454140244104021 its reverse (120401442041454), we get a palindrome (574541686145475).

The spelling of 454140244104021 in words is "four hundred fifty-four trillion, one hundred forty billion, two hundred forty-four million, one hundred four thousand, twenty-one".