43445211457 has 2 divisors, whose sum is σ = 43445211458. Its totient is φ = 43445211456.

The previous prime is 43445211449. The next prime is 43445211461. The reversal of 43445211457 is 75411254434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42010241296 + 1434970161 = 204964^2 + 37881^2 .

It is a cyclic number.

It is not a de Polignac number, because 43445211457 - 2³ = 43445211449 is a prime.

It is not a weakly prime, because it can be changed into another prime (43445217457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21722605728 + 21722605729.

It is an arithmetic number, because the mean of its divisors is an integer number (21722605729).

Almost surely, 2^43445211457 is an apocalyptic number.

It is an amenable number.

43445211457 is a deficient number, since it is larger than the sum of its proper divisors (1).

43445211457 is an equidigital number, since it uses as much as digits as its factorization.

43445211457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 40.

The spelling of 43445211457 in words is "forty-three billion, four hundred forty-five million, two hundred eleven thousand, four hundred fifty-seven".