190666666091 has 48 divisors (see below), whose sum is σ = 222427689120. Its totient is φ = 162860544000.

The previous prime is 190666666087. The next prime is 190666666093.

190666666091 is nontrivially palindromic in base 10.

190666666091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190666666091 - 2² = 190666666087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190666666093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271992041 + ... + 271992741.

It is an arithmetic number, because the mean of its divisors is an integer number (4633910190).

Almost surely, 2^190666666091 is an apocalyptic number.

190666666091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

190666666091 is a deficient number, since it is larger than the sum of its proper divisors (31761023029).

190666666091 is a wasteful number, since it uses less digits than its factorization.

190666666091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 190666666091 in words is "one hundred ninety billion, six hundred sixty-six million, six hundred sixty-six thousand, ninety-one".