201340194091 has 4 divisors (see below), whose sum is σ = 201355234000. Its totient is φ = 201325154184.

The previous prime is 201340194089. The next prime is 201340194131. The reversal of 201340194091 is 190491043102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201340194091 - 2¹ = 201340194089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201940194091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7499856 + ... + 7526653.

It is an arithmetic number, because the mean of its divisors is an integer number (50338808500).

Almost surely, 2^201340194091 is an apocalyptic number.

201340194091 is a deficient number, since it is larger than the sum of its proper divisors (15039909).

201340194091 is a wasteful number, since it uses less digits than its factorization.

201340194091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15039908.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 201340194091 in words is "two hundred one billion, three hundred forty million, one hundred ninety-four thousand, ninety-one".