16243933680 has 120 divisors (see below), whose sum is σ = 58748927328. Its totient is φ = 3998504448.

The previous prime is 16243933679. The next prime is 16243933709. The reversal of 16243933680 is 8633934261.

16243933680 is a `hidden beast` number, since 162 + 43 + 93 + 368 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 858372 + ... + 877091.

Almost surely, 2^16243933680 is an apocalyptic number.

16243933680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16243933680 is an abundant number, since it is smaller than the sum of its proper divisors (42504993648).

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

16243933680 is a wasteful number, since it uses less digits than its factorization.

16243933680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735495 (or 1735486 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 16243933680 in words is "sixteen billion, two hundred forty-three million, nine hundred thirty-three thousand, six hundred eighty".