2558856764 has 12 divisors (see below), whose sum is σ = 4544835624. Its totient is φ = 1260332304.

The previous prime is 2558856761. The next prime is 2558856791. The reversal of 2558856764 is 4676588552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558856761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4773719 + ... + 4774254.

It is an arithmetic number, because the mean of its divisors is an integer number (378736302).

Almost surely, 2^2558856764 is an apocalyptic number.

It is an amenable number.

2558856764 is a deficient number, since it is larger than the sum of its proper divisors (1985978860).

2558856764 is a wasteful number, since it uses less digits than its factorization.

2558856764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548044 (or 9548042 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 56.

The square root of 2558856764 is about 50585.1437084051. The cubic root of 2558856764 is about 1367.7770909727. Note that the first 3 decimals are identical.

The spelling of 2558856764 in words is "two billion, five hundred fifty-eight million, eight hundred fifty-six thousand, seven hundred sixty-four".