2561341102 has 4 divisors (see below), whose sum is σ = 3842011656. Its totient is φ = 1280670550.

The previous prime is 2561341063. The next prime is 2561341109. The reversal of 2561341102 is 2011431652.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561341109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640335274 + ... + 640335277.

It is an arithmetic number, because the mean of its divisors is an integer number (960502914).

Almost surely, 2^2561341102 is an apocalyptic number.

2561341102 is a deficient number, since it is larger than the sum of its proper divisors (1280670554).

2561341102 is a wasteful number, since it uses less digits than its factorization.

2561341102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280670553.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2561341102 is about 50609.6937552481. The cubic root of 2561341102 is about 1368.2195960731.

Adding to 2561341102 its reverse (2011431652), we get a palindrome (4572772754).

The spelling of 2561341102 in words is "two billion, five hundred sixty-one million, three hundred forty-one thousand, one hundred two".