20627851268 has 12 divisors (see below), whose sum is σ = 36099808332. Its totient is φ = 10313620320.

The previous prime is 20627851199. The next prime is 20627851271. The reversal of 20627851268 is 86215872602.

It can be written as a sum of positive squares in 2 ways, for example, as 16594077124 + 4033774144 = 128818^2 + 63512^2 .

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, 150746 + ... + 252942.

It is an arithmetic number, because the mean of its divisors is an integer number (3008317361).

Almost surely, 2^20627851268 is an apocalyptic number.

It is an amenable number.

20627851268 is a deficient number, since it is larger than the sum of its proper divisors (15471957064).

20627851268 is a wasteful number, since it uses less digits than its factorization.

20627851268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152662 (or 152660 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 20627851268 in words is "twenty billion, six hundred twenty-seven million, eight hundred fifty-one thousand, two hundred sixty-eight".