43109149597 has 2 divisors, whose sum is σ = 43109149598. Its totient is φ = 43109149596.

The previous prime is 43109149561. The next prime is 43109149637. The reversal of 43109149597 is 79594190134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43106479641 + 2669956 = 207621^2 + 1634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43109149597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43109140597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21554574798 + 21554574799.

It is an arithmetic number, because the mean of its divisors is an integer number (21554574799).

Almost surely, 2^43109149597 is an apocalyptic number.

It is an amenable number.

43109149597 is a deficient number, since it is larger than the sum of its proper divisors (1).

43109149597 is an equidigital number, since it uses as much as digits as its factorization.

43109149597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 43109149597 in words is "forty-three billion, one hundred nine million, one hundred forty-nine thousand, five hundred ninety-seven".