20422352668 has 12 divisors (see below), whose sum is σ = 35741961640. Its totient is φ = 10210363632.

The previous prime is 20422352659. The next prime is 20422352669. The reversal of 20422352668 is 86625322402.

It is a self number, because there is not a number n which added to its sum of digits gives 20422352668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422352669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144771 + ... + 248602.

Almost surely, 2^20422352668 is an apocalyptic number.

It is an amenable number.

20422352668 is a deficient number, since it is larger than the sum of its proper divisors (15319608972).

20422352668 is a wasteful number, since it uses less digits than its factorization.

20422352668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406356 (or 406354 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 20422352668 in words is "twenty billion, four hundred twenty-two million, three hundred fifty-two thousand, six hundred sixty-eight".