43215350987 has 2 divisors, whose sum is σ = 43215350988. Its totient is φ = 43215350986.

The previous prime is 43215350977. The next prime is 43215350989. The reversal of 43215350987 is 78905351234.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43215350987 is a prime.

Together with 43215350989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43215350989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21607675493 + 21607675494.

It is an arithmetic number, because the mean of its divisors is an integer number (21607675494).

Almost surely, 2^43215350987 is an apocalyptic number.

43215350987 is a deficient number, since it is larger than the sum of its proper divisors (1).

43215350987 is an equidigital number, since it uses as much as digits as its factorization.

43215350987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 43215350987 in words is "forty-three billion, two hundred fifteen million, three hundred fifty thousand, nine hundred eighty-seven".