191059433216 has 72 divisors (see below), whose sum is σ = 397080137328. Its totient is φ = 91671552000.

The previous prime is 191059433209. The next prime is 191059433237. The reversal of 191059433216 is 612334950191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491051 + ... + 789461.

Almost surely, 2^191059433216 is an apocalyptic number.

191059433216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191059433216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198540068664).

191059433216 is an abundant number, since it is smaller than the sum of its proper divisors (206020704112).

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

191059433216 is an equidigital number, since it uses as much as digits as its factorization.

191059433216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298529 (or 298515 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 191059433216 in words is "one hundred ninety-one billion, fifty-nine million, four hundred thirty-three thousand, two hundred sixteen".