43115129969 has 2 divisors, whose sum is σ = 43115129970. Its totient is φ = 43115129968.

The previous prime is 43115129891. The next prime is 43115129983. The reversal of 43115129969 is 96992151134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30076230625 + 13038899344 = 173425^2 + 114188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43115129969 is a prime.

It is a super-2 number, since 2×43115129969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43115129569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21557564984 + 21557564985.

It is an arithmetic number, because the mean of its divisors is an integer number (21557564985).

Almost surely, 2^43115129969 is an apocalyptic number.

It is an amenable number.

43115129969 is a deficient number, since it is larger than the sum of its proper divisors (1).

43115129969 is an equidigital number, since it uses as much as digits as its factorization.

43115129969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 50.

The spelling of 43115129969 in words is "forty-three billion, one hundred fifteen million, one hundred twenty-nine thousand, nine hundred sixty-nine".