2561145514 has 16 divisors (see below), whose sum is σ = 3947126400. Its totient is φ = 1245884544.

The previous prime is 2561145511. The next prime is 2561145539. The reversal of 2561145514 is 4155411652.

It is a self number, because there is not a number n which added to its sum of digits gives 2561145514.

It is not an unprimeable number, because it can be changed into a prime (2561145511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100434 + ... + 123325.

It is an arithmetic number, because the mean of its divisors is an integer number (246695400).

Almost surely, 2^2561145514 is an apocalyptic number.

2561145514 is a deficient number, since it is larger than the sum of its proper divisors (1385980886).

2561145514 is a wasteful number, since it uses less digits than its factorization.

2561145514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223917.

The product of its digits is 24000, while the sum is 34.

The square root of 2561145514 is about 50607.7614007970. The cubic root of 2561145514 is about 1368.1847687261.

The spelling of 2561145514 in words is "two billion, five hundred sixty-one million, one hundred forty-five thousand, five hundred fourteen".