191667852011 has 4 divisors (see below), whose sum is σ = 191668847232. Its totient is φ = 191666856792.

The previous prime is 191667851971. The next prime is 191667852043. The reversal of 191667852011 is 110258766191.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 191667852011 - 2¹⁴ = 191667835627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191667822011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105995 + ... + 628148.

It is an arithmetic number, because the mean of its divisors is an integer number (47917211808).

Almost surely, 2^191667852011 is an apocalyptic number.

191667852011 is a deficient number, since it is larger than the sum of its proper divisors (995221).

191667852011 is an equidigital number, since it uses as much as digits as its factorization.

191667852011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995220.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 191667852011 in words is "one hundred ninety-one billion, six hundred sixty-seven million, eight hundred fifty-two thousand, eleven".