664464523743144 has 48 divisors (see below), whose sum is σ = 1866242952493920. Its totient is φ = 221488174580400.

The previous prime is 664464523743131. The next prime is 664464523743151. The reversal of 664464523743144 is 441347325464466.

It is a happy number.

664464523743144 is a `hidden beast` number, since 6 + 6 + 4 + 4 + 6 + 4 + 523 + 74 + 31 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170901367332 + ... + 170901371219.

It is an arithmetic number, because the mean of its divisors is an integer number (38880061510290).

Almost surely, 2^{664464523743144} is an apocalyptic number.

It is an amenable number.

664464523743144 is an abundant number, since it is smaller than the sum of its proper divisors (1201778428750776).

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

664464523743144 is a wasteful number, since it uses less digits than its factorization.

664464523743144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341802738572 (or 341802738556 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 63.

The spelling of 664464523743144 in words is "six hundred sixty-four trillion, four hundred sixty-four billion, five hundred twenty-three million, seven hundred forty-three thousand, one hundred forty-four".