216647731127180 has 12 divisors (see below), whose sum is σ = 454960235367120. Its totient is φ = 86659092450864.

The previous prime is 216647731127173. The next prime is 216647731127189. The reversal of 216647731127180 is 81721137746612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216647731127189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5416193278160 + ... + 5416193278199.

It is an arithmetic number, because the mean of its divisors is an integer number (37913352947260).

Almost surely, 2^{216647731127180} is an apocalyptic number.

216647731127180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216647731127180 is an abundant number, since it is smaller than the sum of its proper divisors (238312504239940).

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

216647731127180 is a wasteful number, since it uses less digits than its factorization.

216647731127180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832386556368 (or 10832386556366 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 56.

The spelling of 216647731127180 in words is "two hundred sixteen trillion, six hundred forty-seven billion, seven hundred thirty-one million, one hundred twenty-seven thousand, one hundred eighty".