216226634740 has 12 divisors (see below), whose sum is σ = 454075932996. Its totient is φ = 86490653888.

The previous prime is 216226634683. The next prime is 216226634749. The reversal of 216226634740 is 47436622612.

216226634740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 52140068964 + 164086565776 = 228342^2 + 405076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216226634749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5405665849 + ... + 5405665888.

It is an arithmetic number, because the mean of its divisors is an integer number (37839661083).

Almost surely, 2^216226634740 is an apocalyptic number.

216226634740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216226634740 is an abundant number, since it is smaller than the sum of its proper divisors (237849298256).

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

216226634740 is a wasteful number, since it uses less digits than its factorization.

216226634740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10811331746 (or 10811331744 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 216226634740 in words is "two hundred sixteen billion, two hundred twenty-six million, six hundred thirty-four thousand, seven hundred forty".