445107772553665 has 32 divisors (see below), whose sum is σ = 581281990714656. Its totient is φ = 325246177751040.

The previous prime is 445107772553627. The next prime is 445107772553681. The reversal of 445107772553665 is 566355277701544.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 243422528816016 + 201685243737649 = 15602004^2 + 14201593^2 .

It is not a de Polignac number, because 445107772553665 - 2⁹ = 445107772553153 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 445107772553665.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88031542 + ... + 92950351.

It is an arithmetic number, because the mean of its divisors is an integer number (18165062209833).

Almost surely, 2^{445107772553665} is an apocalyptic number.

It is an amenable number.

445107772553665 is a deficient number, since it is larger than the sum of its proper divisors (136174218160991).

445107772553665 is a wasteful number, since it uses less digits than its factorization.

445107772553665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180982309.

The product of its (nonzero) digits is 740880000, while the sum is 67.

The spelling of 445107772553665 in words is "four hundred forty-five trillion, one hundred seven billion, seven hundred seventy-two million, five hundred fifty-three thousand, six hundred sixty-five".