3998181600216 has 64 divisors (see below), whose sum is σ = 11406223807200. Its totient is φ = 1296707543424.

The previous prime is 3998181600211. The next prime is 3998181600223. The reversal of 3998181600216 is 6120061818993.

3998181600216 is a `hidden beast` number, since 3 + 9 + 9 + 8 + 1 + 8 + 1 + 600 + 21 + 6 = 666.

It is a super-2 number, since 2×3998181600216² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998181600211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250128495 + ... + 250144478.

Almost surely, 2^{3998181600216} is an apocalyptic number.

3998181600216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3998181600216 is an abundant number, since it is smaller than the sum of its proper divisors (7408042206984).

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

3998181600216 is a wasteful number, since it uses less digits than its factorization.

3998181600216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500273025 (or 500273015 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 3998181600216 in words is "three trillion, nine hundred ninety-eight billion, one hundred eighty-one million, six hundred thousand, two hundred sixteen".