2561346124 has 6 divisors (see below), whose sum is σ = 4482355724. Its totient is φ = 1280673060.

The previous prime is 2561346121. The next prime is 2561346131. The reversal of 2561346124 is 4216431652.

It is a self number, because there is not a number n which added to its sum of digits gives 2561346124.

It is not an unprimeable number, because it can be changed into a prime (2561346121) 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 as a sum of consecutive naturals, namely, 320168262 + ... + 320168269.

Almost surely, 2^2561346124 is an apocalyptic number.

It is an amenable number.

2561346124 is a deficient number, since it is larger than the sum of its proper divisors (1921009600).

2561346124 is a wasteful number, since it uses less digits than its factorization.

2561346124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640336535 (or 640336533 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 2561346124 is about 50609.7433702247. The cubic root of 2561346124 is about 1368.2204902914.

Adding to 2561346124 its reverse (4216431652), we get a palindrome (6777777776).

The spelling of 2561346124 in words is "two billion, five hundred sixty-one million, three hundred forty-six thousand, one hundred twenty-four".