20343368420 has 48 divisors (see below), whose sum is σ = 43548185520. Its totient is φ = 7979951616.

The previous prime is 20343368347. The next prime is 20343368431. The reversal of 20343368420 is 2486334302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4332009124 + 16011359296 = 65818^2 + 126536^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3292454 + ... + 3298626.

It is an arithmetic number, because the mean of its divisors is an integer number (907253865).

Almost surely, 2^20343368420 is an apocalyptic number.

20343368420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343368420 is an abundant number, since it is smaller than the sum of its proper divisors (23204817100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20343368420 is a wasteful number, since it uses less digits than its factorization.

20343368420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344 (or 9342 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 20343368420 in words is "twenty billion, three hundred forty-three million, three hundred sixty-eight thousand, four hundred twenty".