2604444420644 has 24 divisors (see below), whose sum is σ = 5005491120000. Its totient is φ = 1175893146080.

The previous prime is 2604444420577. The next prime is 2604444420647. The reversal of 2604444420644 is 4460244444062.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 2604444420595 and 2604444420604.

It is not an unprimeable number, because it can be changed into a prime (2604444420647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198624044 + ... + 198637155.

It is an arithmetic number, because the mean of its divisors is an integer number (208562130000).

Almost surely, 2^{2604444420644} is an apocalyptic number.

It is an amenable number.

2604444420644 is a deficient number, since it is larger than the sum of its proper divisors (2401046699356).

2604444420644 is a wasteful number, since it uses less digits than its factorization.

2604444420644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397261363 (or 397261361 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 44.

The spelling of 2604444420644 in words is "two trillion, six hundred four billion, four hundred forty-four million, four hundred twenty thousand, six hundred forty-four".