43561562113 has 2 divisors, whose sum is σ = 43561562114. Its totient is φ = 43561562112.

The previous prime is 43561561969. The next prime is 43561562119. The reversal of 43561562113 is 31126516534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22592494864 + 20969067249 = 150308^2 + 144807^2 .

It is a cyclic number.

It is not a de Polignac number, because 43561562113 - 2¹⁷ = 43561431041 is a prime.

It is not a weakly prime, because it can be changed into another prime (43561562119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21780781056 + 21780781057.

It is an arithmetic number, because the mean of its divisors is an integer number (21780781057).

Almost surely, 2^43561562113 is an apocalyptic number.

It is an amenable number.

43561562113 is a deficient number, since it is larger than the sum of its proper divisors (1).

43561562113 is an equidigital number, since it uses as much as digits as its factorization.

43561562113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The spelling of 43561562113 in words is "forty-three billion, five hundred sixty-one million, five hundred sixty-two thousand, one hundred thirteen".