444642172025745 has 16 divisors (see below), whose sum is σ = 712484574031872. Its totient is φ = 236790125483520.

The previous prime is 444642172025741. The next prime is 444642172025771. The reversal of 444642172025745 is 547520271246444.

It is not a de Polignac number, because 444642172025745 - 2² = 444642172025741 is a prime.

It is a super-2 number, since 2×444642172025745² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444642172025741) 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, 22022881041 + ... + 22022901230.

It is an arithmetic number, because the mean of its divisors is an integer number (44530285876992).

Almost surely, 2^{444642172025745} is an apocalyptic number.

It is an amenable number.

444642172025745 is a deficient number, since it is larger than the sum of its proper divisors (267842402006127).

444642172025745 is a wasteful number, since it uses less digits than its factorization.

444642172025745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44045782952.

The product of its (nonzero) digits is 60211200, while the sum is 57.

The spelling of 444642172025745 in words is "four hundred forty-four trillion, six hundred forty-two billion, one hundred seventy-two million, twenty-five thousand, seven hundred forty-five".