16198710440 has 96 divisors (see below), whose sum is σ = 42418472040. Its totient is φ = 5543915520.

The previous prime is 16198710401. The next prime is 16198710443. The reversal of 16198710440 is 4401789161.

It can be written as a sum of positive squares in 4 ways, for example, as 15620500324 + 578210116 = 124982^2 + 24046^2 .

It is not an unprimeable number, because it can be changed into a prime (16198710443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16157 + ... + 180716.

Almost surely, 2^16198710440 is an apocalyptic number.

16198710440 is a gapful number since it is divisible by the number (10) 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 16198710440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21209236020).

16198710440 is an abundant number, since it is smaller than the sum of its proper divisors (26219761600).

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

16198710440 is a wasteful number, since it uses less digits than its factorization.

16198710440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196923 (or 196908 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 16198710440 in words is "sixteen billion, one hundred ninety-eight million, seven hundred ten thousand, four hundred forty".