441138454753021 has 4 divisors (see below), whose sum is σ = 441138591476352. Its totient is φ = 441138318029692.

The previous prime is 441138454753013. The next prime is 441138454753043. The reversal of 441138454753021 is 120357454831144.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 441138454753021 - 2³ = 441138454753013 is a prime.

It is a super-2 number, since 2×441138454753021² (a number of 30 digits) contains 22 as substring.

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 441138454753021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441138454753621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63401965 + ... + 70014898.

It is an arithmetic number, because the mean of its divisors is an integer number (110284647869088).

Almost surely, 2^{441138454753021} is an apocalyptic number.

It is an amenable number.

441138454753021 is a deficient number, since it is larger than the sum of its proper divisors (136723331).

441138454753021 is a wasteful number, since it uses less digits than its factorization.

441138454753021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136723330.

The product of its (nonzero) digits is 6451200, while the sum is 52.

The spelling of 441138454753021 in words is "four hundred forty-one trillion, one hundred thirty-eight billion, four hundred fifty-four million, seven hundred fifty-three thousand, twenty-one".