216511279087 has 8 divisors (see below), whose sum is σ = 217509529392. Its totient is φ = 215513419200.

The previous prime is 216511279057. The next prime is 216511279093. The reversal of 216511279087 is 780972115612.

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 216511279087 - 2¹⁹ = 216510754799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216511279087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216511279027) 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, 1044787 + ... + 1234747.

It is an arithmetic number, because the mean of its divisors is an integer number (27188691174).

Almost surely, 2^216511279087 is an apocalyptic number.

216511279087 is a deficient number, since it is larger than the sum of its proper divisors (998250305).

216511279087 is a wasteful number, since it uses less digits than its factorization.

216511279087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195209.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 216511279087 in words is "two hundred sixteen billion, five hundred eleven million, two hundred seventy-nine thousand, eighty-seven".