2661344039 has 2 divisors, whose sum is σ = 2661344040. Its totient is φ = 2661344038.

The previous prime is 2661343963. The next prime is 2661344111. The reversal of 2661344039 is 9304431662.

It is a happy number.

2661344039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661344039 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2661343993 and 2661344011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661344639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330672019 + 1330672020.

It is an arithmetic number, because the mean of its divisors is an integer number (1330672020).

Almost surely, 2^2661344039 is an apocalyptic number.

2661344039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661344039 is an equidigital number, since it uses as much as digits as its factorization.

2661344039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 2661344039 is about 51588.2160866220. The cubic root of 2661344039 is about 1385.7993081949.

The spelling of 2661344039 in words is "two billion, six hundred sixty-one million, three hundred forty-four thousand, thirty-nine".