5561620013 has 2 divisors, whose sum is σ = 5561620014. Its totient is φ = 5561620012.

The previous prime is 5561619997. The next prime is 5561620019. The reversal of 5561620013 is 3100261655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5297947369 + 263672644 = 72787^2 + 16238^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561620013 - 2⁴ = 5561619997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5561620019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780810006 + 2780810007.

It is an arithmetic number, because the mean of its divisors is an integer number (2780810007).

Almost surely, 2^5561620013 is an apocalyptic number.

It is an amenable number.

5561620013 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561620013 is an equidigital number, since it uses as much as digits as its factorization.

5561620013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 5561620013 is about 74576.2697712885. The cubic root of 5561620013 is about 1771.7418257211.

Adding to 5561620013 its reverse (3100261655), we get a palindrome (8661881668).

The spelling of 5561620013 in words is "five billion, five hundred sixty-one million, six hundred twenty thousand, thirteen".