20000100243 has 8 divisors (see below), whose sum is σ = 27317210256. Its totient is φ = 13008195200.

The previous prime is 20000100233. The next prime is 20000100247. The reversal of 20000100243 is 34200100002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000100243 - 2²⁵ = 19966545811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000100247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81301098 + ... + 81301343.

It is an arithmetic number, because the mean of its divisors is an integer number (3414651282).

Almost surely, 2^20000100243 is an apocalyptic number.

20000100243 is a deficient number, since it is larger than the sum of its proper divisors (7317110013).

20000100243 is a wasteful number, since it uses less digits than its factorization.

20000100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162602485.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20000100243 its reverse (34200100002), we get a palindrome (54200200245).

The spelling of 20000100243 in words is "twenty billion, one hundred thousand, two hundred forty-three".