191427668782688 has 96 divisors (see below), whose sum is σ = 431289197033184. Its totient is φ = 82853904310272.

The previous prime is 191427668782643. The next prime is 191427668782771. The reversal of 191427668782688 is 886287866724191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46900970 + ... + 50818857.

It is an arithmetic number, because the mean of its divisors is an integer number (4492595802429).

Almost surely, 2^{191427668782688} is an apocalyptic number.

It is an amenable number.

191427668782688 is an abundant number, since it is smaller than the sum of its proper divisors (239861528250496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191427668782688 is a wasteful number, since it uses less digits than its factorization.

191427668782688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97720144 (or 97720136 counting only the distinct ones).

The product of its digits is 6242697216, while the sum is 83.

The spelling of 191427668782688 in words is "one hundred ninety-one trillion, four hundred twenty-seven billion, six hundred sixty-eight million, seven hundred eighty-two thousand, six hundred eighty-eight".