43155819269 has 2 divisors, whose sum is σ = 43155819270. Its totient is φ = 43155819268.

The previous prime is 43155819197. The next prime is 43155819281. The reversal of 43155819269 is 96291855134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28596501025 + 14559318244 = 169105^2 + 120662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43155819269 is a prime.

It is a super-2 number, since 2×43155819269² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43155819269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43155819299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21577909634 + 21577909635.

It is an arithmetic number, because the mean of its divisors is an integer number (21577909635).

Almost surely, 2^43155819269 is an apocalyptic number.

It is an amenable number.

43155819269 is a deficient number, since it is larger than the sum of its proper divisors (1).

43155819269 is an equidigital number, since it uses as much as digits as its factorization.

43155819269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 53.

The spelling of 43155819269 in words is "forty-three billion, one hundred fifty-five million, eight hundred nineteen thousand, two hundred sixty-nine".