2561364356 has 12 divisors (see below), whose sum is σ = 4482741900. Its totient is φ = 1280580960.

The previous prime is 2561364317. The next prime is 2561364401. The reversal of 2561364356 is 6534631652.

It can be written as a sum of positive squares in 2 ways, for example, as 618317956 + 1943046400 = 24866^2 + 44080^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 88370 + ... + 113718.

It is an arithmetic number, because the mean of its divisors is an integer number (373561825).

Almost surely, 2^2561364356 is an apocalyptic number.

It is an amenable number.

2561364356 is a deficient number, since it is larger than the sum of its proper divisors (1921377544).

2561364356 is a wasteful number, since it uses less digits than its factorization.

2561364356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50614 (or 50612 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 2561364356 is about 50609.9234933229. The cubic root of 2561364356 is about 1368.2237366751.

The spelling of 2561364356 in words is "two billion, five hundred sixty-one million, three hundred sixty-four thousand, three hundred fifty-six".