2563105679 has 4 divisors (see below), whose sum is σ = 2586620520. Its totient is φ = 2539590840.

The previous prime is 2563105673. The next prime is 2563105709. The reversal of 2563105679 is 9765013652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563105679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563105673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11757257 + ... + 11757474.

It is an arithmetic number, because the mean of its divisors is an integer number (646655130).

Almost surely, 2^2563105679 is an apocalyptic number.

2563105679 is a deficient number, since it is larger than the sum of its proper divisors (23514841).

2563105679 is a wasteful number, since it uses less digits than its factorization.

2563105679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23514840.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 2563105679 is about 50627.1239455689. The cubic root of 2563105679 is about 1368.5337250800.

The spelling of 2563105679 in words is "two billion, five hundred sixty-three million, one hundred five thousand, six hundred seventy-nine".