43407066737 has 2 divisors, whose sum is σ = 43407066738. Its totient is φ = 43407066736.

The previous prime is 43407066719. The next prime is 43407066751. The reversal of 43407066737 is 73766070434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25679742001 + 17727324736 = 160249^2 + 133144^2 .

It is a cyclic number.

It is not a de Polignac number, because 43407066737 - 2¹⁴ = 43407050353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43407066691 and 43407066700.

It is not a weakly prime, because it can be changed into another prime (43407066757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21703533368 + 21703533369.

It is an arithmetic number, because the mean of its divisors is an integer number (21703533369).

Almost surely, 2^43407066737 is an apocalyptic number.

It is an amenable number.

43407066737 is a deficient number, since it is larger than the sum of its proper divisors (1).

43407066737 is an equidigital number, since it uses as much as digits as its factorization.

43407066737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 47.

The spelling of 43407066737 in words is "forty-three billion, four hundred seven million, sixty-six thousand, seven hundred thirty-seven".