446644666623 has 4 divisors (see below), whose sum is σ = 595526222168. Its totient is φ = 297763111080.

The previous prime is 446644666609. The next prime is 446644666631. The reversal of 446644666623 is 326666446644.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 446644666623 - 2⁵ = 446644666591 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446644664623) 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, 74440777768 + ... + 74440777773.

It is an arithmetic number, because the mean of its divisors is an integer number (148881555542).

Almost surely, 2^446644666623 is an apocalyptic number.

446644666623 is a deficient number, since it is larger than the sum of its proper divisors (148881555545).

446644666623 is a wasteful number, since it uses less digits than its factorization.

446644666623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148881555544.

The product of its digits is 71663616, while the sum is 57.

The spelling of 446644666623 in words is "four hundred forty-six billion, six hundred forty-four million, six hundred sixty-six thousand, six hundred twenty-three".