191420516286 has 12 divisors (see below), whose sum is σ = 414744451992. Its totient is φ = 63806838756.

The previous prime is 191420516281. The next prime is 191420516293. The reversal of 191420516286 is 682615024191.

191420516286 is a `hidden beast` number, since 1 + 9 + 14 + 2 + 0 + 5 + 1 + 628 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191420516281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5317236546 + ... + 5317236581.

It is an arithmetic number, because the mean of its divisors is an integer number (34562037666).

Almost surely, 2^191420516286 is an apocalyptic number.

191420516286 is an abundant number, since it is smaller than the sum of its proper divisors (223323935706).

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

191420516286 is a wasteful number, since it uses less digits than its factorization.

191420516286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10634473135 (or 10634473132 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 191420516286 in words is "one hundred ninety-one billion, four hundred twenty million, five hundred sixteen thousand, two hundred eighty-six".