191091411161548 has 12 divisors (see below), whose sum is σ = 335171723452720. Its totient is φ = 95328061603632.

The previous prime is 191091411161507. The next prime is 191091411161557. The reversal of 191091411161548 is 845161114190191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 191091411161495 and 191091411161504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54410992311 + ... + 54410995822.

Almost surely, 2^{191091411161548} is an apocalyptic number.

It is an amenable number.

191091411161548 is a deficient number, since it is larger than the sum of its proper divisors (144080312291172).

191091411161548 is a wasteful number, since it uses less digits than its factorization.

191091411161548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108821988576 (or 108821988574 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 52.

The spelling of 191091411161548 in words is "one hundred ninety-one trillion, ninety-one billion, four hundred eleven million, one hundred sixty-one thousand, five hundred forty-eight".