5569780981 has 2 divisors, whose sum is σ = 5569780982. Its totient is φ = 5569780980.

The previous prime is 5569780913. The next prime is 5569780999. The reversal of 5569780981 is 1890879655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5246104900 + 323676081 = 72430^2 + 17991^2 .

It is a cyclic number.

It is not a de Polignac number, because 5569780981 - 2¹⁵ = 5569748213 is a prime.

It is a super-2 number, since 2×5569780981² = 62044920352618644722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5569780781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2784890490 + 2784890491.

It is an arithmetic number, because the mean of its divisors is an integer number (2784890491).

Almost surely, 2^5569780981 is an apocalyptic number.

It is an amenable number.

5569780981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5569780981 is an equidigital number, since it uses as much as digits as its factorization.

5569780981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 58.

The square root of 5569780981 is about 74630.9652959145. The cubic root of 5569780981 is about 1772.6080039066.

The spelling of 5569780981 in words is "five billion, five hundred sixty-nine million, seven hundred eighty thousand, nine hundred eighty-one".