2051263568 has 10 divisors (see below), whose sum is σ = 3974323194. Its totient is φ = 1025631776.

The previous prime is 2051263553. The next prime is 2051263589. The reversal of 2051263568 is 8653621502.

It can be written as a sum of positive squares in only one way, i.e., 1221362704 + 829900864 = 34948^2 + 28808^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64101971 + ... + 64102002.

Almost surely, 2^2051263568 is an apocalyptic number.

It is an amenable number.

2051263568 is a deficient number, since it is larger than the sum of its proper divisors (1923059626).

2051263568 is a wasteful number, since it uses less digits than its factorization.

2051263568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128203981 (or 128203975 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 2051263568 is about 45290.8773154153. The cubic root of 2051263568 is about 1270.5950397367.

The spelling of 2051263568 in words is "two billion, fifty-one million, two hundred sixty-three thousand, five hundred sixty-eight".