20206312688 has 10 divisors (see below), whose sum is σ = 39149730864. Its totient is φ = 10103156336.

The previous prime is 20206312681. The next prime is 20206312691. The reversal of 20206312688 is 88621360202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206312681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631447256 + ... + 631447287.

Almost surely, 2^20206312688 is an apocalyptic number.

It is an amenable number.

20206312688 is a deficient number, since it is larger than the sum of its proper divisors (18943418176).

20206312688 is a wasteful number, since it uses less digits than its factorization.

20206312688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262894551 (or 1262894545 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 20206312688 in words is "twenty billion, two hundred six million, three hundred twelve thousand, six hundred eighty-eight".