43403842861 has 2 divisors, whose sum is σ = 43403842862. Its totient is φ = 43403842860.

The previous prime is 43403842841. The next prime is 43403842879. The reversal of 43403842861 is 16824830434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27320784100 + 16083058761 = 165290^2 + 126819^2 .

It is a cyclic number.

It is not a de Polignac number, because 43403842861 - 2⁵ = 43403842829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43403842841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21701921430 + 21701921431.

It is an arithmetic number, because the mean of its divisors is an integer number (21701921431).

Almost surely, 2^43403842861 is an apocalyptic number.

It is an amenable number.

43403842861 is a deficient number, since it is larger than the sum of its proper divisors (1).

43403842861 is an equidigital number, since it uses as much as digits as its factorization.

43403842861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 43403842861 in words is "forty-three billion, four hundred three million, eight hundred forty-two thousand, eight hundred sixty-one".