20196346133 has 4 divisors (see below), whose sum is σ = 20196632748. Its totient is φ = 20196059520.

The previous prime is 20196346099. The next prime is 20196346189. The reversal of 20196346133 is 33164369102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11716330564 + 8480015569 = 108242^2 + 92087^2 .

It is a cyclic number.

It is not a de Polignac number, because 20196346133 - 2¹⁶ = 20196280597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20196349133) 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, 43973 + ... + 205733.

It is an arithmetic number, because the mean of its divisors is an integer number (5049158187).

Almost surely, 2^20196346133 is an apocalyptic number.

It is an amenable number.

20196346133 is a deficient number, since it is larger than the sum of its proper divisors (286615).

20196346133 is a wasteful number, since it uses less digits than its factorization.

20196346133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286614.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 20196346133 in words is "twenty billion, one hundred ninety-six million, three hundred forty-six thousand, one hundred thirty-three".