20116112633540 has 144 divisors (see below), whose sum is σ = 53077680074496. Its totient is φ = 6268652501760.

The previous prime is 20116112633473. The next prime is 20116112633543. The reversal of 20116112633540 is 4533621161102.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 20116112633540.

It is not an unprimeable number, because it can be changed into a prime (20116112633543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82935722 + ... + 83177918.

Almost surely, 2^{20116112633540} is an apocalyptic number.

20116112633540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20116112633540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26538840037248).

20116112633540 is an abundant number, since it is smaller than the sum of its proper divisors (32961567440956).

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

20116112633540 is a wasteful number, since it uses less digits than its factorization.

20116112633540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247138 (or 247125 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 20116112633540 its reverse (4533621161102), we get a palindrome (24649733794642).

The spelling of 20116112633540 in words is "twenty trillion, one hundred sixteen billion, one hundred twelve million, six hundred thirty-three thousand, five hundred forty".