19662698416 has 40 divisors (see below), whose sum is σ = 40166724800. Its totient is φ = 9298774080.

The previous prime is 19662698411. The next prime is 19662698417. The reversal of 19662698416 is 61489626691.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19662698411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135931 + ... + 240421.

It is an arithmetic number, because the mean of its divisors is an integer number (1004168120).

Almost surely, 2^19662698416 is an apocalyptic number.

19662698416 is a gapful number since it is divisible by the number (16) 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 19662698416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20083362400).

19662698416 is an abundant number, since it is smaller than the sum of its proper divisors (20504026384).

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

19662698416 is a wasteful number, since it uses less digits than its factorization.

19662698416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105137 (or 105131 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The spelling of 19662698416 in words is "nineteen billion, six hundred sixty-two million, six hundred ninety-eight thousand, four hundred sixteen".