20006662064 has 20 divisors (see below), whose sum is σ = 38774902920. Its totient is φ = 10000235520.

The previous prime is 20006662061. The next prime is 20006662069. The reversal of 20006662064 is 46026660002.

It is a self number, because there is not a number n which added to its sum of digits gives 20006662064.

It is not an unprimeable number, because it can be changed into a prime (20006662061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139697 + ... + 243984.

It is an arithmetic number, because the mean of its divisors is an integer number (1938745146).

Almost surely, 2^20006662064 is an apocalyptic number.

It is an amenable number.

20006662064 is a deficient number, since it is larger than the sum of its proper divisors (18768240856).

20006662064 is a wasteful number, since it uses less digits than its factorization.

20006662064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386948 (or 386942 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 20006662064 in words is "twenty billion, six million, six hundred sixty-two thousand, sixty-four".