20316222352 has 10 divisors (see below), whose sum is σ = 39362680838. Its totient is φ = 10158111168.

The previous prime is 20316222323. The next prime is 20316222373. The reversal of 20316222352 is 25322261302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19166741136 + 1149481216 = 138444^2 + 33904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20316222352.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634881933 + ... + 634881964.

Almost surely, 2^20316222352 is an apocalyptic number.

It is an amenable number.

20316222352 is a deficient number, since it is larger than the sum of its proper divisors (19046458486).

20316222352 is a wasteful number, since it uses less digits than its factorization.

20316222352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269763905 (or 1269763899 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20316222352 its reverse (25322261302), we get a palindrome (45638483654).

The spelling of 20316222352 in words is "twenty billion, three hundred sixteen million, two hundred twenty-two thousand, three hundred fifty-two".