216887663147 has 2 divisors, whose sum is σ = 216887663148. Its totient is φ = 216887663146.

The previous prime is 216887663143. The next prime is 216887663191. The reversal of 216887663147 is 741366788612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216887663147 - 2² = 216887663143 is a prime.

It is not a weakly prime, because it can be changed into another prime (216887663143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108443831573 + 108443831574.

It is an arithmetic number, because the mean of its divisors is an integer number (108443831574).

Almost surely, 2^216887663147 is an apocalyptic number.

216887663147 is a deficient number, since it is larger than the sum of its proper divisors (1).

216887663147 is an equidigital number, since it uses as much as digits as its factorization.

216887663147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 59.

The spelling of 216887663147 in words is "two hundred sixteen billion, eight hundred eighty-seven million, six hundred sixty-three thousand, one hundred forty-seven".