16689240000 has 840 divisors, whose sum is σ = 66287068848. Its totient is φ = 4147200000.

The previous prime is 16689239981. The next prime is 16689240041. The reversal of 16689240000 is 4298661.

16689240000 is a `hidden beast` number, since 166 + 8 + 92 + 400 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 165239950 + ... + 165240050.

Almost surely, 2^16689240000 is an apocalyptic number.

16689240000 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 16689240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33143534424).

16689240000 is an abundant number, since it is smaller than the sum of its proper divisors (49597828848).

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

16689240000 is an equidigital number, since it uses as much as digits as its factorization.

16689240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 16689240000 in words is "sixteen billion, six hundred eighty-nine million, two hundred forty thousand".