444131260721 has 2 divisors, whose sum is σ = 444131260722. Its totient is φ = 444131260720.

The previous prime is 444131260631. The next prime is 444131260787. The reversal of 444131260721 is 127062131444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432123484321 + 12007776400 = 657361^2 + 109580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444131260721 is a prime.

It is not a weakly prime, because it can be changed into another prime (444131260121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222065630360 + 222065630361.

It is an arithmetic number, because the mean of its divisors is an integer number (222065630361).

Almost surely, 2^444131260721 is an apocalyptic number.

It is an amenable number.

444131260721 is a deficient number, since it is larger than the sum of its proper divisors (1).

444131260721 is an equidigital number, since it uses as much as digits as its factorization.

444131260721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 444131260721 in words is "four hundred forty-four billion, one hundred thirty-one million, two hundred sixty thousand, seven hundred twenty-one".