20312352266 has 8 divisors (see below), whose sum is σ = 31211663364. Its totient is φ = 9908464480.

The previous prime is 20312352223. The next prime is 20312352283. The reversal of 20312352266 is 66225321302.

It can be written as a sum of positive squares in 2 ways, for example, as 17923586641 + 2388765625 = 133879^2 + 48875^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 123855725 + ... + 123855888.

Almost surely, 2^20312352266 is an apocalyptic number.

20312352266 is a deficient number, since it is larger than the sum of its proper divisors (10899311098).

20312352266 is a wasteful number, since it uses less digits than its factorization.

20312352266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247711656.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 20312352266 its reverse (66225321302), we get a palindrome (86537673568).

The spelling of 20312352266 in words is "twenty billion, three hundred twelve million, three hundred fifty-two thousand, two hundred sixty-six".