216500631132 has 24 divisors (see below), whose sum is σ = 505502508672. Its totient is φ = 72119110000.

The previous prime is 216500631103. The next prime is 216500631169. The reversal of 216500631132 is 231136005612.

216500631132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216500631132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951994 + ... + 5988257.

It is an arithmetic number, because the mean of its divisors is an integer number (21062604528).

Almost surely, 2^216500631132 is an apocalyptic number.

It is an amenable number.

216500631132 is an abundant number, since it is smaller than the sum of its proper divisors (289001877540).

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

216500631132 is a wasteful number, since it uses less digits than its factorization.

216500631132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941769 (or 11941767 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 216500631132 its reverse (231136005612), we get a palindrome (447636636744).

The spelling of 216500631132 in words is "two hundred sixteen billion, five hundred million, six hundred thirty-one thousand, one hundred thirty-two".