216627183820 has 12 divisors (see below), whose sum is σ = 454917086064. Its totient is φ = 86650873520.

The previous prime is 216627183811. The next prime is 216627183841. The reversal of 216627183820 is 28381726612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5415679576 + ... + 5415679615.

It is an arithmetic number, because the mean of its divisors is an integer number (37909757172).

Almost surely, 2^216627183820 is an apocalyptic number.

216627183820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216627183820 is an abundant number, since it is smaller than the sum of its proper divisors (238289902244).

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

216627183820 is a wasteful number, since it uses less digits than its factorization.

216627183820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10831359200 (or 10831359198 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 216627183820 in words is "two hundred sixteen billion, six hundred twenty-seven million, one hundred eighty-three thousand, eight hundred twenty".