1172161185700 has 72 divisors (see below), whose sum is σ = 2548839891584. Its totient is φ = 467897472000.

The previous prime is 1172161185661. The next prime is 1172161185703. The reversal of 1172161185700 is 75811612711.

It is not an unprimeable number, because it can be changed into a prime (1172161185703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212076337 + ... + 212081863.

Almost surely, 2^{1172161185700} is an apocalyptic number.

1172161185700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172161185700 is an abundant number, since it is smaller than the sum of its proper divisors (1376678705884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1172161185700 is a wasteful number, since it uses less digits than its factorization.

1172161185700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9533 (or 9526 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 40.

The spelling of 1172161185700 in words is "one trillion, one hundred seventy-two billion, one hundred sixty-one million, one hundred eighty-five thousand, seven hundred".