1664261514424 has 96 divisors (see below), whose sum is σ = 3253285347840. Its totient is φ = 798106417920.

The previous prime is 1664261514367. The next prime is 1664261514439. The reversal of 1664261514424 is 4244151624661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419524489 + ... + 419528455.

It is an arithmetic number, because the mean of its divisors is an integer number (33888389040).

Almost surely, 2^{1664261514424} is an apocalyptic number.

It is an amenable number.

1664261514424 is a deficient number, since it is larger than the sum of its proper divisors (1589023833416).

1664261514424 is a wasteful number, since it uses less digits than its factorization.

1664261514424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509 (or 4474 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The spelling of 1664261514424 in words is "one trillion, six hundred sixty-four billion, two hundred sixty-one million, five hundred fourteen thousand, four hundred twenty-four".