454361621421 has 8 divisors (see below), whose sum is σ = 605822365504. Its totient is φ = 302904312480.

The previous prime is 454361621387. The next prime is 454361621423. The reversal of 454361621421 is 124126163454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 454361621421 - 2¹³ = 454361613229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 454361621421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454361621423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532441 + ... + 1091886.

It is an arithmetic number, because the mean of its divisors is an integer number (75727795688).

Almost surely, 2^454361621421 is an apocalyptic number.

It is an amenable number.

454361621421 is a deficient number, since it is larger than the sum of its proper divisors (151460744083).

454361621421 is a wasteful number, since it uses less digits than its factorization.

454361621421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717571.

The product of its digits is 138240, while the sum is 39.

Adding to 454361621421 its reverse (124126163454), we get a palindrome (578487784875).

The spelling of 454361621421 in words is "four hundred fifty-four billion, three hundred sixty-one million, six hundred twenty-one thousand, four hundred twenty-one".