20221779472 has 20 divisors (see below), whose sum is σ = 39208401216. Its totient is φ = 10103482400.

The previous prime is 20221779443. The next prime is 20221779533. The reversal of 20221779472 is 27497712202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440404 + ... + 484147.

Almost surely, 2^20221779472 is an apocalyptic number.

It is an amenable number.

20221779472 is a deficient number, since it is larger than the sum of its proper divisors (18986621744).

20221779472 is a wasteful number, since it uses less digits than its factorization.

20221779472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925926 (or 925920 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 20221779472 in words is "twenty billion, two hundred twenty-one million, seven hundred seventy-nine thousand, four hundred seventy-two".