444661563777013 has 16 divisors (see below), whose sum is σ = 485709593846400. Its totient is φ = 403717758612480.

The previous prime is 444661563776981. The next prime is 444661563777031. The reversal of 444661563777013 is 310777365166444.

It is a cyclic number.

It is not a de Polignac number, because 444661563777013 - 2⁵ = 444661563776981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444661563777073) 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, 44060545 + ... + 53203897.

It is an arithmetic number, because the mean of its divisors is an integer number (30356849615400).

Almost surely, 2^{444661563777013} is an apocalyptic number.

It is an amenable number.

444661563777013 is a deficient number, since it is larger than the sum of its proper divisors (41048030069387).

444661563777013 is a wasteful number, since it uses less digits than its factorization.

444661563777013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9149052.

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 444661563777013 in words is "four hundred forty-four trillion, six hundred sixty-one billion, five hundred sixty-three million, seven hundred seventy-seven thousand, thirteen".