20686708030740 has 48 divisors (see below), whose sum is σ = 58738596336000. Its totient is φ = 5438758917760.

The previous prime is 20686708030721. The next prime is 20686708030771. The reversal of 20686708030740 is 4703080768602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2428013115 + ... + 2428021634.

It is an arithmetic number, because the mean of its divisors is an integer number (1223720757000).

Almost surely, 2^{20686708030740} is an apocalyptic number.

20686708030740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20686708030740 is an abundant number, since it is smaller than the sum of its proper divisors (38051888305260).

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

20686708030740 is a wasteful number, since it uses less digits than its factorization.

20686708030740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856034832 (or 4856034830 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 20686708030740 in words is "twenty trillion, six hundred eighty-six billion, seven hundred eight million, thirty thousand, seven hundred forty".