20066700688 has 10 divisors (see below), whose sum is σ = 38879232614. Its totient is φ = 10033350336.

The previous prime is 20066700631. The next prime is 20066700701. The reversal of 20066700688 is 88600766002.

It can be written as a sum of positive squares in only one way, i.e., 12019175424 + 8047525264 = 109632^2 + 89708^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627084381 + ... + 627084412.

Almost surely, 2^20066700688 is an apocalyptic number.

It is an amenable number.

20066700688 is a deficient number, since it is larger than the sum of its proper divisors (18812531926).

20066700688 is a wasteful number, since it uses less digits than its factorization.

20066700688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254168801 (or 1254168795 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 20066700688 in words is "twenty billion, sixty-six million, seven hundred thousand, six hundred eighty-eight".