2564112987 has 24 divisors (see below), whose sum is σ = 3812818464. Its totient is φ = 1659273984.

The previous prime is 2564112973. The next prime is 2564112989. The reversal of 2564112987 is 7892114652.

2564112987 is a `hidden beast` number, since 2 + 564 + 1 + 1 + 2 + 9 + 87 = 666.

It is not a de Polignac number, because 2564112987 - 2⁸ = 2564112731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2564112989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135298 + ... + 153080.

It is an arithmetic number, because the mean of its divisors is an integer number (158867436).

Almost surely, 2^2564112987 is an apocalyptic number.

2564112987 is a deficient number, since it is larger than the sum of its proper divisors (1248705477).

2564112987 is a wasteful number, since it uses less digits than its factorization.

2564112987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18259 (or 18256 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2564112987 is about 50637.0712719446. The cubic root of 2564112987 is about 1368.7129808465.

The spelling of 2564112987 in words is "two billion, five hundred sixty-four million, one hundred twelve thousand, nine hundred eighty-seven".