43834107661 has 2 divisors, whose sum is σ = 43834107662. Its totient is φ = 43834107660.

The previous prime is 43834107619. The next prime is 43834107673. The reversal of 43834107661 is 16670143834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38089377225 + 5744730436 = 195165^2 + 75794^2 .

It is a cyclic number.

It is not a de Polignac number, because 43834107661 - 2¹³ = 43834099469 is a prime.

It is a super-2 number, since 2×43834107661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43838107661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21917053830 + 21917053831.

It is an arithmetic number, because the mean of its divisors is an integer number (21917053831).

Almost surely, 2^43834107661 is an apocalyptic number.

It is an amenable number.

43834107661 is a deficient number, since it is larger than the sum of its proper divisors (1).

43834107661 is an equidigital number, since it uses as much as digits as its factorization.

43834107661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 43834107661 in words is "forty-three billion, eight hundred thirty-four million, one hundred seven thousand, six hundred sixty-one".