444735065522561 has 4 divisors (see below), whose sum is σ = 485165526024624. Its totient is φ = 404304605020500.

The previous prime is 444735065522543. The next prime is 444735065522581. The reversal of 444735065522561 is 165225560537444.

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 a de Polignac number, because none of the positive numbers 2^k-444735065522561 is a prime.

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 444735065522561.

It is not an unprimeable number, because it can be changed into a prime (444735065522581) 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, 20215230251015 + ... + 20215230251036.

It is an arithmetic number, because the mean of its divisors is an integer number (121291381506156).

Almost surely, 2^{444735065522561} is an apocalyptic number.

It is an amenable number.

444735065522561 is a deficient number, since it is larger than the sum of its proper divisors (40430460502063).

444735065522561 is a wasteful number, since it uses less digits than its factorization.

444735065522561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40430460502062.

The product of its (nonzero) digits is 120960000, while the sum is 59.

The spelling of 444735065522561 in words is "four hundred forty-four trillion, seven hundred thirty-five billion, sixty-five million, five hundred twenty-two thousand, five hundred sixty-one".