1165261747172 has 12 divisors (see below), whose sum is σ = 2039331262080. Its totient is φ = 582595672296.

The previous prime is 1165261747159. The next prime is 1165261747219. The reversal of 1165261747172 is 2717471625611.

It is a self number, because there is not a number n which added to its sum of digits gives 1165261747172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8725772 + ... + 8858307.

It is an arithmetic number, because the mean of its divisors is an integer number (169944271840).

Almost surely, 2^{1165261747172} is an apocalyptic number.

It is an amenable number.

1165261747172 is a deficient number, since it is larger than the sum of its proper divisors (874069514908).

1165261747172 is a wasteful number, since it uses less digits than its factorization.

1165261747172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17600650 (or 17600648 counting only the distinct ones).

The product of its digits is 987840, while the sum is 50.

The spelling of 1165261747172 in words is "one trillion, one hundred sixty-five billion, two hundred sixty-one million, seven hundred forty-seven thousand, one hundred seventy-two".