216927651679 has 8 divisors (see below), whose sum is σ = 224482338000. Its totient is φ = 209377926912.

The previous prime is 216927651643. The next prime is 216927651701. The reversal of 216927651679 is 976156729612.

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 216927651679 - 2¹⁵ = 216927618911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216927621679) 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, 1151314 + ... + 1326415.

It is an arithmetic number, because the mean of its divisors is an integer number (28060292250).

Almost surely, 2^216927651679 is an apocalyptic number.

216927651679 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

216927651679 is a deficient number, since it is larger than the sum of its proper divisors (7554686321).

216927651679 is a wasteful number, since it uses less digits than its factorization.

216927651679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480777.

The product of its digits is 17146080, while the sum is 61.

The spelling of 216927651679 in words is "two hundred sixteen billion, nine hundred twenty-seven million, six hundred fifty-one thousand, six hundred seventy-nine".