43376713561 has 2 divisors, whose sum is σ = 43376713562. Its totient is φ = 43376713560.

The previous prime is 43376713519. The next prime is 43376713571. The reversal of 43376713561 is 16531767334.

43376713561 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 can be written as a sum of positive squares in only one way, i.e., 22927713561 + 20449000000 = 151419^2 + 143000^2 .

It is a cyclic number.

It is not a de Polignac number, because 43376713561 - 2⁹ = 43376713049 is a prime.

It is not a weakly prime, because it can be changed into another prime (43376713571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21688356780 + 21688356781.

It is an arithmetic number, because the mean of its divisors is an integer number (21688356781).

Almost surely, 2^43376713561 is an apocalyptic number.

It is an amenable number.

43376713561 is a deficient number, since it is larger than the sum of its proper divisors (1).

43376713561 is an equidigital number, since it uses as much as digits as its factorization.

43376713561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 46.

The spelling of 43376713561 in words is "forty-three billion, three hundred seventy-six million, seven hundred thirteen thousand, five hundred sixty-one".