20136683201 has 4 divisors (see below), whose sum is σ = 20336056404. Its totient is φ = 19937310000.

The previous prime is 20136683191. The next prime is 20136683213. The reversal of 20136683201 is 10238663102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19817882176 + 318801025 = 140776^2 + 17855^2 .

It is a cyclic number.

It is not a de Polignac number, because 20136683201 - 2⁶ = 20136683137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20136683291) 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, 99686450 + ... + 99686651.

It is an arithmetic number, because the mean of its divisors is an integer number (5084014101).

Almost surely, 2^20136683201 is an apocalyptic number.

It is an amenable number.

20136683201 is a deficient number, since it is larger than the sum of its proper divisors (199373203).

20136683201 is a wasteful number, since it uses less digits than its factorization.

20136683201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199373202.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 20136683201 in words is "twenty billion, one hundred thirty-six million, six hundred eighty-three thousand, two hundred one".