201717214454187 has 12 divisors (see below), whose sum is σ = 300768319760064. Its totient is φ = 130140138357360.

The previous prime is 201717214454179. The next prime is 201717214454233. The reversal of 201717214454187 is 781454412717102.

201717214454187 is a `hidden beast` number, since 2 + 0 + 1 + 7 + 1 + 7 + 2 + 1 + 4 + 454 + 187 = 666.

It is not a de Polignac number, because 201717214454187 - 2³ = 201717214454179 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (201717214454167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361500384048 + ... + 361500384605.

It is an arithmetic number, because the mean of its divisors is an integer number (25064026646672).

Almost surely, 2^{201717214454187} is an apocalyptic number.

201717214454187 is a deficient number, since it is larger than the sum of its proper divisors (99051105305877).

201717214454187 is a wasteful number, since it uses less digits than its factorization.

201717214454187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723000768690 (or 723000768687 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 54.

The spelling of 201717214454187 in words is "two hundred one trillion, seven hundred seventeen billion, two hundred fourteen million, four hundred fifty-four thousand, one hundred eighty-seven".