18784797696 has 528 divisors, whose sum is σ = 66346381440. Its totient is φ = 5142528000.

The previous prime is 18784797673. The next prime is 18784797719. The reversal of 18784797696 is 69679748781.

18784797696 is a `hidden beast` number, since 1 + 87 + 8 + 479 + 76 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (18784797673) and next prime (18784797719).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (256048128) is a multiple of the sum of its prime divisors (144).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 185988046 + ... + 185988146.

Almost surely, 2^18784797696 is an apocalyptic number.

18784797696 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 18784797696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33173190720).

18784797696 is an abundant number, since it is smaller than the sum of its proper divisors (47561583744).

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

18784797696 is a wasteful number, since it uses less digits than its factorization.

18784797696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 144 counting only the distinct ones).

The product of its digits is 256048128, while the sum is 72.

The spelling of 18784797696 in words is "eighteen billion, seven hundred eighty-four million, seven hundred ninety-seven thousand, six hundred ninety-six".