2444644664622 has 16 divisors (see below), whose sum is σ = 5432543699280. Its totient is φ = 814881554856.

The previous prime is 2444644664617. The next prime is 2444644664689. The reversal of 2444644664622 is 2264664464442.

2444644664622 is a `hidden beast` number, since 2 + 4 + 4 + 4 + 6 + 4 + 4 + 6 + 6 + 4 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 45271197493 = 2444644664622 / (2 + 4 + 4 + 4 + 6 + 4 + 4 + 6 + 6 + 4 + 6 + 2 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22635598693 + ... + 22635598800.

It is an arithmetic number, because the mean of its divisors is an integer number (339533981205).

Almost surely, 2^{2444644664622} is an apocalyptic number.

2444644664622 is an abundant number, since it is smaller than the sum of its proper divisors (2987899034658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2444644664622 is a wasteful number, since it uses less digits than its factorization.

2444644664622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45271197504 (or 45271197498 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 54.

The spelling of 2444644664622 in words is "two trillion, four hundred forty-four billion, six hundred forty-four million, six hundred sixty-four thousand, six hundred twenty-two".