2561363298 has 24 divisors (see below), whose sum is σ = 5976514908. Its totient is φ = 788111712.

The previous prime is 2561363291. The next prime is 2561363303. The reversal of 2561363298 is 8923631652.

2561363298 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 3 + 632 + 9 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2561068449 + 294849 = 50607^2 + 543^2 .

It is not an unprimeable number, because it can be changed into a prime (2561363291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5472765 + ... + 5473232.

Almost surely, 2^2561363298 is an apocalyptic number.

2561363298 is an abundant number, since it is smaller than the sum of its proper divisors (3415151610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561363298 is a wasteful number, since it uses less digits than its factorization.

2561363298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10946018 (or 10946015 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 2561363298 is about 50609.9130408263. The cubic root of 2561363298 is about 1368.2235482884.

The spelling of 2561363298 in words is "two billion, five hundred sixty-one million, three hundred sixty-three thousand, two hundred ninety-eight".