16111216100 has 72 divisors (see below), whose sum is σ = 40404913920. Its totient is φ = 5461758720.

The previous prime is 16111216097. The next prime is 16111216129. The reversal of 16111216100 is 161211161.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67004 + ... + 191603.

It is an arithmetic number, because the mean of its divisors is an integer number (561179360).

Almost surely, 2^16111216100 is an apocalyptic number.

16111216100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16111216100 is an abundant number, since it is smaller than the sum of its proper divisors (24293697820).

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

16111216100 is a wasteful number, since it uses less digits than its factorization.

16111216100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258717 (or 258710 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 16111216100 its reverse (161211161), we get a palindrome (16272427261).

The spelling of 16111216100 in words is "sixteen billion, one hundred eleven million, two hundred sixteen thousand, one hundred".