441375601721 has 4 divisors (see below), whose sum is σ = 441378129444. Its totient is φ = 441373074000.

The previous prime is 441375601669. The next prime is 441375601769. The reversal of 441375601721 is 127106573144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 303530476096 + 137845125625 = 550936^2 + 371275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441375601721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441375601621) 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, 980810 + ... + 1358211.

It is an arithmetic number, because the mean of its divisors is an integer number (110344532361).

Almost surely, 2^441375601721 is an apocalyptic number.

It is an amenable number.

441375601721 is a deficient number, since it is larger than the sum of its proper divisors (2527723).

441375601721 is a wasteful number, since it uses less digits than its factorization.

441375601721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527722.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 441375601721 in words is "four hundred forty-one billion, three hundred seventy-five million, six hundred one thousand, seven hundred twenty-one".