20343784169 has 8 divisors (see below), whose sum is σ = 20494176768. Its totient is φ = 20193849040.

The previous prime is 20343784147. The next prime is 20343784243. The reversal of 20343784169 is 96148734302.

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 20343784169 - 2²⁰ = 20342735593 is a prime.

It is a super-2 number, since 2×20343784169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20343783169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24842 + ... + 203235.

It is an arithmetic number, because the mean of its divisors is an integer number (2561772096).

Almost surely, 2^20343784169 is an apocalyptic number.

It is an amenable number.

20343784169 is a deficient number, since it is larger than the sum of its proper divisors (150392599).

20343784169 is a wasteful number, since it uses less digits than its factorization.

20343784169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228735.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 20343784169 in words is "twenty billion, three hundred forty-three million, seven hundred eighty-four thousand, one hundred sixty-nine".