1440442625864 has 16 divisors (see below), whose sum is σ = 2946359916720. Its totient is φ = 654746648080.

The previous prime is 1440442625863. The next prime is 1440442625977. The reversal of 1440442625864 is 4685262440441.

It is not an unprimeable number, because it can be changed into a prime (1440442625861) 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, 8184333014 + ... + 8184333189.

It is an arithmetic number, because the mean of its divisors is an integer number (184147494795).

Almost surely, 2^{1440442625864} is an apocalyptic number.

It is an amenable number.

1440442625864 is an abundant number, since it is smaller than the sum of its proper divisors (1505917290856).

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

1440442625864 is a wasteful number, since it uses less digits than its factorization.

1440442625864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16368666220 (or 16368666216 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 50.

The spelling of 1440442625864 in words is "one trillion, four hundred forty billion, four hundred forty-two million, six hundred twenty-five thousand, eight hundred sixty-four".