201986835197 has 16 divisors (see below), whose sum is σ = 257285312640. Its totient is φ = 154371184128.

The previous prime is 201986835181. The next prime is 201986835251. The reversal of 201986835197 is 791538689102.

It is not a de Polignac number, because 201986835197 - 2⁴ = 201986835181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201986805197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44665328 + ... + 44669849.

It is an arithmetic number, because the mean of its divisors is an integer number (16080332040).

Almost surely, 2^201986835197 is an apocalyptic number.

It is an amenable number.

201986835197 is a deficient number, since it is larger than the sum of its proper divisors (55298477443).

201986835197 is a wasteful number, since it uses less digits than its factorization.

201986835197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89335220.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 201986835197 in words is "two hundred one billion, nine hundred eighty-six million, eight hundred thirty-five thousand, one hundred ninety-seven".