444363741561 has 16 divisors (see below), whose sum is σ = 618473484608. Its totient is φ = 283510756800.

The previous prime is 444363741553. The next prime is 444363741583. The reversal of 444363741561 is 165147363444.

It is a happy number.

It is not a de Polignac number, because 444363741561 - 2³ = 444363741553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444363741561.

It is not an unprimeable number, because it can be changed into a prime (444363741511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32806975 + ... + 32820516.

It is an arithmetic number, because the mean of its divisors is an integer number (38654592788).

Almost surely, 2^444363741561 is an apocalyptic number.

It is an amenable number.

444363741561 is a deficient number, since it is larger than the sum of its proper divisors (174109743047).

444363741561 is a wasteful number, since it uses less digits than its factorization.

444363741561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65627592.

The product of its digits is 2903040, while the sum is 48.

The spelling of 444363741561 in words is "four hundred forty-four billion, three hundred sixty-three million, seven hundred forty-one thousand, five hundred sixty-one".