445405525564666 has 8 divisors (see below), whose sum is σ = 668163281246100. Its totient is φ = 222684431815968.

The previous prime is 445405525564633. The next prime is 445405525564711. The reversal of 445405525564666 is 666465525504544.

It can be written as a sum of positive squares in 2 ways, for example, as 429868692225625 + 15536833339041 = 20733275^2 + 3941679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9165452811 + ... + 9165501406.

Almost surely, 2^{445405525564666} is an apocalyptic number.

445405525564666 is a deficient number, since it is larger than the sum of its proper divisors (222757755681434).

445405525564666 is a wasteful number, since it uses less digits than its factorization.

445405525564666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18330966368.

The product of its (nonzero) digits is 2073600000, while the sum is 67.

The spelling of 445405525564666 in words is "four hundred forty-five trillion, four hundred five billion, five hundred twenty-five million, five hundred sixty-four thousand, six hundred sixty-six".