16771988736 has 144 divisors (see below), whose sum is σ = 50808280320. Its totient is φ = 5454213120.

The previous prime is 16771988729. The next prime is 16771988743. The reversal of 16771988736 is 63788917761.

It is an interprime number because it is at equal distance from previous prime (16771988729) and next prime (16771988743).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent 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, 253801 + ... + 312983.

It is an arithmetic number, because the mean of its divisors is an integer number (352835280).

Almost surely, 2^16771988736 is an apocalyptic number.

16771988736 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 16771988736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25404140160).

16771988736 is an abundant number, since it is smaller than the sum of its proper divisors (34036291584).

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

16771988736 is an equidigital number, since it uses as much as digits as its factorization.

16771988736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59249 (or 59229 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

The spelling of 16771988736 in words is "sixteen billion, seven hundred seventy-one million, nine hundred eighty-eight thousand, seven hundred thirty-six".