340428299903987 has 2 divisors, whose sum is σ = 340428299903988. Its totient is φ = 340428299903986.

The previous prime is 340428299903969. The next prime is 340428299904041. The reversal of 340428299903987 is 789309992824043.

It is a weak prime.

It is an emirp because it is prime and its reverse (789309992824043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340428299903987 - 2¹⁴ = 340428299887603 is a prime.

It is not a weakly prime, because it can be changed into another prime (340428299903387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170214149951993 + 170214149951994.

It is an arithmetic number, because the mean of its divisors is an integer number (170214149951994).

Almost surely, 2^{340428299903987} is an apocalyptic number.

340428299903987 is a deficient number, since it is larger than the sum of its proper divisors (1).

340428299903987 is an equidigital number, since it uses as much as digits as its factorization.

340428299903987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693052928, while the sum is 77.

The spelling of 340428299903987 in words is "three hundred forty trillion, four hundred twenty-eight billion, two hundred ninety-nine million, nine hundred three thousand, nine hundred eighty-seven".