816536224120 has 64 divisors (see below), whose sum is σ = 1839790908000. Its totient is φ = 326155399680.

The previous prime is 816536224111. The next prime is 816536224159. The reversal of 816536224120 is 21422635618.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 15 ways as a sum of consecutive naturals, for example, 102717906 + ... + 102725854.

Almost surely, 2^816536224120 is an apocalyptic number.

It is an amenable number.

816536224120 is an abundant number, since it is smaller than the sum of its proper divisors (1023254683880).

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

816536224120 is a wasteful number, since it uses less digits than its factorization.

816536224120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11248 (or 11244 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 816536224120 its reverse (21422635618), we get a palindrome (837958859738).

The spelling of 816536224120 in words is "eight hundred sixteen billion, five hundred thirty-six million, two hundred twenty-four thousand, one hundred twenty".