20243828940287 has 2 divisors, whose sum is σ = 20243828940288. Its totient is φ = 20243828940286.

The previous prime is 20243828940229. The next prime is 20243828940301. The reversal of 20243828940287 is 78204982834202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20243828940287 - 2²⁰ = 20243827891711 is a prime.

It is a super-2 number, since 2×20243828940287² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20243828940487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121914470143 + 10121914470144.

It is an arithmetic number, because the mean of its divisors is an integer number (10121914470144).

Almost surely, 2^{20243828940287} is an apocalyptic number.

20243828940287 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243828940287 is an equidigital number, since it uses as much as digits as its factorization.

20243828940287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24772608, while the sum is 59.

The spelling of 20243828940287 in words is "twenty trillion, two hundred forty-three billion, eight hundred twenty-eight million, nine hundred forty thousand, two hundred eighty-seven".