191497510768 has 10 divisors (see below), whose sum is σ = 371026427144. Its totient is φ = 95748755376.

The previous prime is 191497510759. The next prime is 191497510777. The reversal of 191497510768 is 867015794191.

It is a happy number.

191497510768 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (191497510759) and next prime (191497510777).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984297196 + ... + 5984297227.

Almost surely, 2^191497510768 is an apocalyptic number.

It is an amenable number.

191497510768 is a deficient number, since it is larger than the sum of its proper divisors (179528916376).

191497510768 is a wasteful number, since it uses less digits than its factorization.

191497510768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11968594431 (or 11968594425 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 58.

The spelling of 191497510768 in words is "one hundred ninety-one billion, four hundred ninety-seven million, five hundred ten thousand, seven hundred sixty-eight".