16748816640 has 144 divisors (see below), whose sum is σ = 54937716288. Its totient is φ = 4345602048.

The previous prime is 16748816633. The next prime is 16748816743. The reversal of 16748816640 is 4661884761.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83139 + ... + 201021.

Almost surely, 2^16748816640 is an apocalyptic number.

16748816640 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 16748816640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27468858144).

16748816640 is an abundant number, since it is smaller than the sum of its proper divisors (38188899648).

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

16748816640 is a wasteful number, since it uses less digits than its factorization.

16748816640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117944 (or 117930 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 16748816640 in words is "sixteen billion, seven hundred forty-eight million, eight hundred sixteen thousand, six hundred forty".