216888797814 has 16 divisors (see below), whose sum is σ = 467145103152. Its totient is φ = 66735014688.

The previous prime is 216888797803. The next prime is 216888797849. The reversal of 216888797814 is 418797888612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390312729 + ... + 1390312884.

It is an arithmetic number, because the mean of its divisors is an integer number (29196568947).

Almost surely, 2^216888797814 is an apocalyptic number.

216888797814 is an abundant number, since it is smaller than the sum of its proper divisors (250256305338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216888797814 is a wasteful number, since it uses less digits than its factorization.

216888797814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780625631.

The product of its digits is 86704128, while the sum is 69.

The spelling of 216888797814 in words is "two hundred sixteen billion, eight hundred eighty-eight million, seven hundred ninety-seven thousand, eight hundred fourteen".