43213313399987 has 2 divisors, whose sum is σ = 43213313399988. Its totient is φ = 43213313399986.

The previous prime is 43213313399951. The next prime is 43213313400071. The reversal of 43213313399987 is 78999331331234.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43213313399987 is a prime.

It is not a weakly prime, because it can be changed into another prime (43213313329987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606656699993 + 21606656699994.

It is an arithmetic number, because the mean of its divisors is an integer number (21606656699994).

Almost surely, 2^{43213313399987} is an apocalyptic number.

43213313399987 is a deficient number, since it is larger than the sum of its proper divisors (1).

43213313399987 is an equidigital number, since it uses as much as digits as its factorization.

43213313399987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79361856, while the sum is 65.

The spelling of 43213313399987 in words is "forty-three trillion, two hundred thirteen billion, three hundred thirteen million, three hundred ninety-nine thousand, nine hundred eighty-seven".