7445144644 has 12 divisors (see below), whose sum is σ = 14890289344. Its totient is φ = 3190776264.

The previous prime is 7445144639. The next prime is 7445144653. The reversal of 7445144644 is 4464415447.

7445144644 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 7445144644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132948984 + ... + 132949039.

Almost surely, 2^7445144644 is an apocalyptic number.

It is an amenable number.

7445144644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7445144644 is a wasteful number, since it uses less digits than its factorization.

7445144644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265898034 (or 265898032 counting only the distinct ones).

The product of its digits is 860160, while the sum is 43.

The square root of 7445144644 is about 86285.2516018815. The cubic root of 7445144644 is about 1952.6498836183.

The spelling of 7445144644 in words is "seven billion, four hundred forty-five million, one hundred forty-four thousand, six hundred forty-four".