16887931720 has 64 divisors (see below), whose sum is σ = 41521818240. Its totient is φ = 6130752000.

The previous prime is 16887931667. The next prime is 16887931727. The reversal of 16887931720 is 2713978861.

It is not an unprimeable number, because it can be changed into a prime (16887931727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232509 + ... + 296371.

It is an arithmetic number, because the mean of its divisors is an integer number (648778410).

Almost surely, 2^16887931720 is an apocalyptic number.

16887931720 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 16887931720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20760909120).

16887931720 is an abundant number, since it is smaller than the sum of its proper divisors (24633886520).

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

16887931720 is a wasteful number, since it uses less digits than its factorization.

16887931720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64486 (or 64482 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 16887931720 in words is "sixteen billion, eight hundred eighty-seven million, nine hundred thirty-one thousand, seven hundred twenty".