20088666740 has 12 divisors (see below), whose sum is σ = 42186200196. Its totient is φ = 8035466688.

The previous prime is 20088666733. The next prime is 20088666757. The reversal of 20088666740 is 4766688002.

It can be written as a sum of positive squares in 2 ways, for example, as 9201413776 + 10887252964 = 95924^2 + 104342^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 502216649 + ... + 502216688.

It is an arithmetic number, because the mean of its divisors is an integer number (3515516683).

Almost surely, 2^20088666740 is an apocalyptic number.

20088666740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20088666740 is an abundant number, since it is smaller than the sum of its proper divisors (22097533456).

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

20088666740 is a wasteful number, since it uses less digits than its factorization.

20088666740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004433346 (or 1004433344 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 20088666740 in words is "twenty billion, eighty-eight million, six hundred sixty-six thousand, seven hundred forty".