451103553101621 has 8 divisors (see below), whose sum is σ = 523241647947840. Its totient is φ = 380889140784768.

The previous prime is 451103553101599. The next prime is 451103553101639. The reversal of 451103553101621 is 126101355301154.

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

It is a de Polignac number, because none of the positive numbers 2^k-451103553101621 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 (451103553101021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480920631836 + ... + 480920632773.

It is an arithmetic number, because the mean of its divisors is an integer number (65405205993480).

Almost surely, 2^{451103553101621} is an apocalyptic number.

It is an amenable number.

451103553101621 is a deficient number, since it is larger than the sum of its proper divisors (72138094846219).

451103553101621 is an equidigital number, since it uses as much as digits as its factorization.

451103553101621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961841264683.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 451103553101621 in words is "four hundred fifty-one trillion, one hundred three billion, five hundred fifty-three million, one hundred one thousand, six hundred twenty-one".