66822171119 has 8 divisors (see below), whose sum is σ = 72924015312. Its totient is φ = 60724843840.

The previous prime is 66822171061. The next prime is 66822171121. The reversal of 66822171119 is 91117122866.

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-66822171119 is a prime.

It is a super-2 number, since 2×66822171119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66822171119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66822171139) 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, 1098254 + ... + 1157499.

It is an arithmetic number, because the mean of its divisors is an integer number (9115501914).

Almost surely, 2^66822171119 is an apocalyptic number.

66822171119 is a deficient number, since it is larger than the sum of its proper divisors (6101844193).

66822171119 is a wasteful number, since it uses less digits than its factorization.

66822171119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258457.

The product of its digits is 72576, while the sum is 44.

The spelling of 66822171119 in words is "sixty-six billion, eight hundred twenty-two million, one hundred seventy-one thousand, one hundred nineteen".