1043663817172 has 12 divisors (see below), whose sum is σ = 1922538610720. Its totient is φ = 494367071256.

The previous prime is 1043663817137. The next prime is 1043663817223. The reversal of 1043663817172 is 2717183663401.

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 3 ways as a sum of consecutive naturals, for example, 6866209248 + ... + 6866209399.

Almost surely, 2^{1043663817172} is an apocalyptic number.

It is an amenable number.

1043663817172 is a deficient number, since it is larger than the sum of its proper divisors (878874793548).

1043663817172 is a wasteful number, since it uses less digits than its factorization.

1043663817172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13732418670 (or 13732418668 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 1043663817172 in words is "one trillion, forty-three billion, six hundred sixty-three million, eight hundred seventeen thousand, one hundred seventy-two".