18795705665856 has 224 divisors, whose sum is σ = 59835181685760. Its totient is φ = 5086772711424.

The previous prime is 18795705665843. The next prime is 18795705665921. The reversal of 18795705665856 is 65856650759781.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175710820 + ... + 175817756.

Almost surely, 2^{18795705665856} is an apocalyptic number.

18795705665856 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 18795705665856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29917590842880).

18795705665856 is an abundant number, since it is smaller than the sum of its proper divisors (41039476019904).

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

18795705665856 is a wasteful number, since it uses less digits than its factorization.

18795705665856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113861 (or 113851 counting only the distinct ones).

The product of its (nonzero) digits is 3810240000, while the sum is 78.

The spelling of 18795705665856 in words is "eighteen trillion, seven hundred ninety-five billion, seven hundred five million, six hundred sixty-five thousand, eight hundred fifty-six".