20468280686 has 24 divisors (see below), whose sum is σ = 35823018456. Its totient is φ = 8745604560.

The previous prime is 20468280683. The next prime is 20468280713. The reversal of 20468280686 is 68608286402.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20468280683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283061 + ... + 347936.

It is an arithmetic number, because the mean of its divisors is an integer number (1492625769).

Almost surely, 2^20468280686 is an apocalyptic number.

20468280686 is a deficient number, since it is larger than the sum of its proper divisors (15354737770).

20468280686 is a wasteful number, since it uses less digits than its factorization.

20468280686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631344 (or 631337 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 50.

The spelling of 20468280686 in words is "twenty billion, four hundred sixty-eight million, two hundred eighty thousand, six hundred eighty-six".