43012222146557 has 2 divisors, whose sum is σ = 43012222146558. Its totient is φ = 43012222146556.

The previous prime is 43012222146503. The next prime is 43012222146559. The reversal of 43012222146557 is 75564122221034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38862930552196 + 4149291594361 = 6234014^2 + 2036981^2 .

It is a cyclic number.

It is not a de Polignac number, because 43012222146557 - 2¹⁴ = 43012222130173 is a prime.

Together with 43012222146559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43012222146559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21506111073278 + 21506111073279.

It is an arithmetic number, because the mean of its divisors is an integer number (21506111073279).

Almost surely, 2^{43012222146557} is an apocalyptic number.

It is an amenable number.

43012222146557 is a deficient number, since it is larger than the sum of its proper divisors (1).

43012222146557 is an equidigital number, since it uses as much as digits as its factorization.

43012222146557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 43012222146557 in words is "forty-three trillion, twelve billion, two hundred twenty-two million, one hundred forty-six thousand, five hundred fifty-seven".