16437981105 has 256 divisors, whose sum is σ = 39326515200. Its totient is φ = 6315356160.

The previous prime is 16437981103. The next prime is 16437981121. The reversal of 16437981105 is 50118973461.

16437981105 is a `hidden beast` number, since 16 + 437 + 98 + 110 + 5 = 666.

It is not a de Polignac number, because 16437981105 - 2¹ = 16437981103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16437981103) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 6472926 + ... + 6475464.

It is an arithmetic number, because the mean of its divisors is an integer number (153619200).

Almost surely, 2^16437981105 is an apocalyptic number.

16437981105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16437981105 is an abundant number, since it is smaller than the sum of its proper divisors (22888534095).

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

16437981105 is a wasteful number, since it uses less digits than its factorization.

16437981105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 16437981105 in words is "sixteen billion, four hundred thirty-seven million, nine hundred eighty-one thousand, one hundred five".