214518689647 has 2 divisors, whose sum is σ = 214518689648. Its totient is φ = 214518689646.

The previous prime is 214518689641. The next prime is 214518689681. The reversal of 214518689647 is 746986815412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214518689647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214518689641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107259344823 + 107259344824.

It is an arithmetic number, because the mean of its divisors is an integer number (107259344824).

Almost surely, 2^214518689647 is an apocalyptic number.

214518689647 is a deficient number, since it is larger than the sum of its proper divisors (1).

214518689647 is an equidigital number, since it uses as much as digits as its factorization.

214518689647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23224320, while the sum is 61.

The spelling of 214518689647 in words is "two hundred fourteen billion, five hundred eighteen million, six hundred eighty-nine thousand, six hundred forty-seven".