1165031217172 has 24 divisors (see below), whose sum is σ = 2055141630080. Its totient is φ = 577854708480.

The previous prime is 1165031217169. The next prime is 1165031217319. The reversal of 1165031217172 is 2717121305611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166653 + ... + 1535524.

Almost surely, 2^{1165031217172} is an apocalyptic number.

It is an amenable number.

1165031217172 is a deficient number, since it is larger than the sum of its proper divisors (890110412908).

1165031217172 is a wasteful number, since it uses less digits than its factorization.

1165031217172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703551 (or 1703549 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 1165031217172 in words is "one trillion, one hundred sixty-five billion, thirty-one million, two hundred seventeen thousand, one hundred seventy-two".