444640452605564 has 6 divisors (see below), whose sum is σ = 778120792059744. Its totient is φ = 222320226302780.

The previous prime is 444640452605563. The next prime is 444640452605617. The reversal of 444640452605564 is 465506254046444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444640452605563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55580056575692 + ... + 55580056575699.

It is an arithmetic number, because the mean of its divisors is an integer number (129686798676624).

Almost surely, 2^{444640452605564} is an apocalyptic number.

It is an amenable number.

444640452605564 is a deficient number, since it is larger than the sum of its proper divisors (333480339454180).

444640452605564 is a wasteful number, since it uses less digits than its factorization.

444640452605564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111160113151395 (or 111160113151393 counting only the distinct ones).

The product of its (nonzero) digits is 221184000, while the sum is 59.

The spelling of 444640452605564 in words is "four hundred forty-four trillion, six hundred forty billion, four hundred fifty-two million, six hundred five thousand, five hundred sixty-four".