18717696000 has 448 divisors, whose sum is σ = 69311885760. Its totient is φ = 4984012800.

The previous prime is 18717695977. The next prime is 18717696007. The reversal of 18717696000 is 69671781.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18717696007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27647662 + ... + 27648338.

Almost surely, 2^18717696000 is an apocalyptic number.

18717696000 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 18717696000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34655942880).

18717696000 is an abundant number, since it is smaller than the sum of its proper divisors (50594189760).

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

18717696000 is an frugal number, since it uses more digits than its factorization.

18717696000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 18717696000 in words is "eighteen billion, seven hundred seventeen million, six hundred ninety-six thousand".