5561918701 has 2 divisors, whose sum is σ = 5561918702. Its totient is φ = 5561918700.

The previous prime is 5561918639. The next prime is 5561918707. The reversal of 5561918701 is 1078191655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3183893476 + 2378025225 = 56426^2 + 48765^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561918701 - 2⁹ = 5561918189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5561918707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780959350 + 2780959351.

It is an arithmetic number, because the mean of its divisors is an integer number (2780959351).

Almost surely, 2^5561918701 is an apocalyptic number.

It is an amenable number.

5561918701 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561918701 is an equidigital number, since it uses as much as digits as its factorization.

5561918701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 43.

The square root of 5561918701 is about 74578.2723117129. The cubic root of 5561918701 is about 1771.7735424120.

The spelling of 5561918701 in words is "five billion, five hundred sixty-one million, nine hundred eighteen thousand, seven hundred one".