43380444313 has 2 divisors, whose sum is σ = 43380444314. Its totient is φ = 43380444312.

The previous prime is 43380444311. The next prime is 43380444409. The reversal of 43380444313 is 31344408334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41800620304 + 1579824009 = 204452^2 + 39747^2 .

It is a cyclic number.

It is not a de Polignac number, because 43380444313 - 2¹ = 43380444311 is a prime.

Together with 43380444311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (43380444311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21690222156 + 21690222157.

It is an arithmetic number, because the mean of its divisors is an integer number (21690222157).

Almost surely, 2^43380444313 is an apocalyptic number.

It is an amenable number.

43380444313 is a deficient number, since it is larger than the sum of its proper divisors (1).

43380444313 is an equidigital number, since it uses as much as digits as its factorization.

43380444313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 43380444313 in words is "forty-three billion, three hundred eighty million, four hundred forty-four thousand, three hundred thirteen".