16115111112 has 16 divisors (see below), whose sum is σ = 40287777840. Its totient is φ = 5371703696.

The previous prime is 16115111107. The next prime is 16115111113. The reversal of 16115111112 is 21111151161.

It is not an unprimeable number, because it can be changed into a prime (16115111113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335731458 + ... + 335731505.

It is an arithmetic number, because the mean of its divisors is an integer number (2517986115).

Almost surely, 2^16115111112 is an apocalyptic number.

16115111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16115111112 is an abundant number, since it is smaller than the sum of its proper divisors (24172666728).

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

16115111112 is a wasteful number, since it uses less digits than its factorization.

16115111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671462972 (or 671462968 counting only the distinct ones).

The product of its digits is 60, while the sum is 21.

Adding to 16115111112 its reverse (21111151161), we get a palindrome (37226262273).

The spelling of 16115111112 in words is "sixteen billion, one hundred fifteen million, one hundred eleven thousand, one hundred twelve".