665126383472 has 40 divisors (see below), whose sum is σ = 1307148337152. Its totient is φ = 327800043200.

The previous prime is 665126383463. The next prime is 665126383483. The reversal of 665126383472 is 274383621566.

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 7 ways as a sum of consecutive naturals, for example, 4783313 + ... + 4920399.

Almost surely, 2^665126383472 is an apocalyptic number.

It is an amenable number.

665126383472 is a deficient number, since it is larger than the sum of its proper divisors (642021953680).

665126383472 is a wasteful number, since it uses less digits than its factorization.

665126383472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141437 (or 141431 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 53.

The spelling of 665126383472 in words is "six hundred sixty-five billion, one hundred twenty-six million, three hundred eighty-three thousand, four hundred seventy-two".