43013692609 has 2 divisors, whose sum is σ = 43013692610. Its totient is φ = 43013692608.

The previous prime is 43013692567. The next prime is 43013692633. The reversal of 43013692609 is 90629631034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37058175025 + 5955517584 = 192505^2 + 77172^2 .

It is a cyclic number.

It is not a de Polignac number, because 43013692609 - 2²¹ = 43011595457 is a prime.

It is not a weakly prime, because it can be changed into another prime (43013192609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21506846304 + 21506846305.

It is an arithmetic number, because the mean of its divisors is an integer number (21506846305).

Almost surely, 2^43013692609 is an apocalyptic number.

It is an amenable number.

43013692609 is a deficient number, since it is larger than the sum of its proper divisors (1).

43013692609 is an equidigital number, since it uses as much as digits as its factorization.

43013692609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 43013692609 in words is "forty-three billion, thirteen million, six hundred ninety-two thousand, six hundred nine".