43676534042257 has 2 divisors, whose sum is σ = 43676534042258. Its totient is φ = 43676534042256.

The previous prime is 43676534042237. The next prime is 43676534042261. The reversal of 43676534042257 is 75224043567634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37162788784641 + 6513745257616 = 6096129^2 + 2552204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43676534042257 is a prime.

It is not a weakly prime, because it can be changed into another prime (43676534042237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21838267021128 + 21838267021129.

It is an arithmetic number, because the mean of its divisors is an integer number (21838267021129).

Almost surely, 2^{43676534042257} is an apocalyptic number.

It is an amenable number.

43676534042257 is a deficient number, since it is larger than the sum of its proper divisors (1).

43676534042257 is an equidigital number, since it uses as much as digits as its factorization.

43676534042257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101606400, while the sum is 58.

The spelling of 43676534042257 in words is "forty-three trillion, six hundred seventy-six billion, five hundred thirty-four million, forty-two thousand, two hundred fifty-seven".