16665746016 has 144 divisors (see below), whose sum is σ = 45283495824. Its totient is φ = 5366532096.

The previous prime is 16665746003. The next prime is 16665746023. The reversal of 16665746016 is 61064756661.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22735986 + ... + 22736718.

It is an arithmetic number, because the mean of its divisors is an integer number (314468721).

Almost surely, 2^16665746016 is an apocalyptic number.

16665746016 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 16665746016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22641747912).

16665746016 is an abundant number, since it is smaller than the sum of its proper divisors (28617749808).

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

16665746016 is a wasteful number, since it uses less digits than its factorization.

16665746016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 16665746016 in words is "sixteen billion, six hundred sixty-five million, seven hundred forty-six thousand, sixteen".