216633981250 has 48 divisors (see below), whose sum is σ = 423822248640. Its totient is φ = 82885990000.

The previous prime is 216633981247. The next prime is 216633981251. The reversal of 216633981250 is 52189336612.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 216633981250.

It is not an unprimeable number, because it can be changed into a prime (216633981251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609760 + ... + 897259.

It is an arithmetic number, because the mean of its divisors is an integer number (8829630180).

Almost surely, 2^216633981250 is an apocalyptic number.

216633981250 is a deficient number, since it is larger than the sum of its proper divisors (207188267390).

216633981250 is an equidigital number, since it uses as much as digits as its factorization.

216633981250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507069 (or 1507049 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 216633981250 in words is "two hundred sixteen billion, six hundred thirty-three million, nine hundred eighty-one thousand, two hundred fifty".