2172040717187 has 8 divisors (see below), whose sum is σ = 2508881256432. Its totient is φ = 1858430560000.

The previous prime is 2172040717169. The next prime is 2172040717201. The reversal of 2172040717187 is 7817170402712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172040717187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2172040717117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5807595314 + ... + 5807595687.

It is an arithmetic number, because the mean of its divisors is an integer number (313610157054).

Almost surely, 2^{2172040717187} is an apocalyptic number.

2172040717187 is a deficient number, since it is larger than the sum of its proper divisors (336840539245).

2172040717187 is a wasteful number, since it uses less digits than its factorization.

2172040717187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615191029.

The product of its (nonzero) digits is 307328, while the sum is 47.

The spelling of 2172040717187 in words is "two trillion, one hundred seventy-two billion, forty million, seven hundred seventeen thousand, one hundred eighty-seven".