191508229168 has 10 divisors (see below), whose sum is σ = 371047194044. Its totient is φ = 95754114576.

The previous prime is 191508229147. The next prime is 191508229217. The reversal of 191508229168 is 861922805191.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984632146 + ... + 5984632177.

Almost surely, 2^191508229168 is an apocalyptic number.

It is an amenable number.

191508229168 is a deficient number, since it is larger than the sum of its proper divisors (179538964876).

191508229168 is a wasteful number, since it uses less digits than its factorization.

191508229168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11969264331 (or 11969264325 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 52.

The spelling of 191508229168 in words is "one hundred ninety-one billion, five hundred eight million, two hundred twenty-nine thousand, one hundred sixty-eight".