20343303849 has 8 divisors (see below), whose sum is σ = 29590260192. Its totient is φ = 12329275040.

The previous prime is 20343303847. The next prime is 20343303887. The reversal of 20343303849 is 94830334302.

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 20343303849 - 2¹ = 20343303847 is a prime.

It is a super-2 number, since 2×20343303849² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20343303847) 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, 308231844 + ... + 308231909.

It is an arithmetic number, because the mean of its divisors is an integer number (3698782524).

Almost surely, 2^20343303849 is an apocalyptic number.

It is an amenable number.

20343303849 is a deficient number, since it is larger than the sum of its proper divisors (9246956343).

20343303849 is a wasteful number, since it uses less digits than its factorization.

20343303849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616463767.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 20343303849 in words is "twenty billion, three hundred forty-three million, three hundred three thousand, eight hundred forty-nine".