16949028105 has 24 divisors (see below), whose sum is σ = 30391363080. Its totient is φ = 8727774720.

The previous prime is 16949028073. The next prime is 16949028121. The reversal of 16949028105 is 50182094961.

It can be written as a sum of positive squares in 4 ways, for example, as 5206488336 + 11742539769 = 72156^2 + 108363^2 .

It is not a de Polignac number, because 16949028105 - 2⁵ = 16949028073 is a prime.

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

It is a Curzon number.

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, 6492576 + ... + 6495185.

It is an arithmetic number, because the mean of its divisors is an integer number (1266306795).

Almost surely, 2^16949028105 is an apocalyptic number.

16949028105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16949028105 is a deficient number, since it is larger than the sum of its proper divisors (13442334975).

16949028105 is a wasteful number, since it uses less digits than its factorization.

16949028105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12987801 (or 12987798 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 16949028105 in words is "sixteen billion, nine hundred forty-nine million, twenty-eight thousand, one hundred five".