20009200919201 has 4 divisors (see below), whose sum is σ = 21548370220692. Its totient is φ = 18470031617712.

The previous prime is 20009200919179. The next prime is 20009200919203. The reversal of 20009200919201 is 10291900290002.

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 10275743136400 + 9733457782801 = 3205580^2 + 3119849^2 .

It is a cyclic number.

It is not a de Polignac number, because 20009200919201 - 2⁶ = 20009200919137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20009200919203) 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, 769584650726 + ... + 769584650751.

It is an arithmetic number, because the mean of its divisors is an integer number (5387092555173).

Almost surely, 2^{20009200919201} is an apocalyptic number.

It is an amenable number.

20009200919201 is a deficient number, since it is larger than the sum of its proper divisors (1539169301491).

20009200919201 is a wasteful number, since it uses less digits than its factorization.

20009200919201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539169301490.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 20009200919201 in words is "twenty trillion, nine billion, two hundred million, nine hundred nineteen thousand, two hundred one".