20456012008 has 64 divisors (see below), whose sum is σ = 41200125120. Its totient is φ = 9487334400.

The previous prime is 20456011997. The next prime is 20456012033. The reversal of 20456012008 is 80021065402.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5201803 + ... + 5205733.

It is an arithmetic number, because the mean of its divisors is an integer number (643751955).

Almost surely, 2^20456012008 is an apocalyptic number.

It is an amenable number.

20456012008 is an abundant number, since it is smaller than the sum of its proper divisors (20744113112).

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

20456012008 is a wasteful number, since it uses less digits than its factorization.

20456012008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498 (or 4494 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The spelling of 20456012008 in words is "twenty billion, four hundred fifty-six million, twelve thousand, eight".