2568157287 has 16 divisors (see below), whose sum is σ = 3622560000. Its totient is φ = 1613836224.

The previous prime is 2568157247. The next prime is 2568157313. The reversal of 2568157287 is 7827518652.

2568157287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2568157287 - 2⁶ = 2568157223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568157247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101862 + ... + 124547.

It is an arithmetic number, because the mean of its divisors is an integer number (226410000).

Almost surely, 2^2568157287 is an apocalyptic number.

2568157287 is a deficient number, since it is larger than the sum of its proper divisors (1054402713).

2568157287 is a wasteful number, since it uses less digits than its factorization.

2568157287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226630.

The product of its digits is 1881600, while the sum is 51.

The square root of 2568157287 is about 50676.9897192010. The cubic root of 2568157287 is about 1369.4322130806.

The spelling of 2568157287 in words is "two billion, five hundred sixty-eight million, one hundred fifty-seven thousand, two hundred eighty-seven".