216686881063907 has 8 divisors (see below), whose sum is σ = 227279594109984. Its totient is φ = 206191796709888.

The previous prime is 216686881063883. The next prime is 216686881063949. The reversal of 216686881063907 is 709360188686612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216686881063907 - 2⁶ = 216686881063843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216686881063007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24407168468 + ... + 24407177345.

It is an arithmetic number, because the mean of its divisors is an integer number (28409949263748).

Almost surely, 2^{216686881063907} is an apocalyptic number.

216686881063907 is a deficient number, since it is larger than the sum of its proper divisors (10592713046077).

216686881063907 is a wasteful number, since it uses less digits than its factorization.

216686881063907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48814346029.

The product of its (nonzero) digits is 250822656, while the sum is 71.

The spelling of 216686881063907 in words is "two hundred sixteen trillion, six hundred eighty-six billion, eight hundred eighty-one million, sixty-three thousand, nine hundred seven".