216877269791 has 48 divisors (see below), whose sum is σ = 282100008960. Its totient is φ = 162194114880.

The previous prime is 216877269781. The next prime is 216877269883. The reversal of 216877269791 is 197962778612.

It is not a de Polignac number, because 216877269791 - 2¹⁸ = 216877007647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216877269781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5195240 + ... + 5236818.

It is an arithmetic number, because the mean of its divisors is an integer number (5877083520).

Almost surely, 2^216877269791 is an apocalyptic number.

216877269791 is a deficient number, since it is larger than the sum of its proper divisors (65222739169).

216877269791 is a wasteful number, since it uses less digits than its factorization.

216877269791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41716 (or 41673 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 65.

The spelling of 216877269791 in words is "two hundred sixteen billion, eight hundred seventy-seven million, two hundred sixty-nine thousand, seven hundred ninety-one".