20426361168 has 20 divisors (see below), whose sum is σ = 52768099808. Its totient is φ = 6808787040.

The previous prime is 20426361139. The next prime is 20426361209. The reversal of 20426361168 is 86116362402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212774548 + ... + 212774643.

Almost surely, 2^20426361168 is an apocalyptic number.

It is an amenable number.

20426361168 is an abundant number, since it is smaller than the sum of its proper divisors (32341738640).

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

20426361168 is a wasteful number, since it uses less digits than its factorization.

20426361168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425549202 (or 425549196 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 20426361168 in words is "twenty billion, four hundred twenty-six million, three hundred sixty-one thousand, one hundred sixty-eight".