20243828940289 has 4 divisors (see below), whose sum is σ = 20674548705024. Its totient is φ = 19813109175556.

The previous prime is 20243828940287. The next prime is 20243828940301. The reversal of 20243828940289 is 98204982834202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20243828940289 - 2¹ = 20243828940287 is a prime.

It is a super-2 number, since 2×20243828940289² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20243828940287) 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, 215359882297 + ... + 215359882390.

It is an arithmetic number, because the mean of its divisors is an integer number (5168637176256).

Almost surely, 2^{20243828940289} is an apocalyptic number.

It is an amenable number.

20243828940289 is a deficient number, since it is larger than the sum of its proper divisors (430719764735).

20243828940289 is an equidigital number, since it uses as much as digits as its factorization.

20243828940289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430719764734.

The product of its (nonzero) digits is 31850496, while the sum is 61.

The spelling of 20243828940289 in words is "twenty trillion, two hundred forty-three billion, eight hundred twenty-eight million, nine hundred forty thousand, two hundred eighty-nine".