8180001216 has 56 divisors (see below), whose sum is σ = 24047693840. Its totient is φ = 2726666496.

The previous prime is 8180001209. The next prime is 8180001233. The reversal of 8180001216 is 6121000818.

It is a super-2 number, since 2×8180001216² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 8180001216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365171 + ... + 2368626.

Almost surely, 2^8180001216 is an apocalyptic number.

It is an amenable number.

8180001216 is an abundant number, since it is smaller than the sum of its proper divisors (15867692624).

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

8180001216 is a wasteful number, since it uses less digits than its factorization.

8180001216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733818 (or 4733802 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 8180001216 is about 90443.3591591997. The cubic root of 8180001216 is about 2014.8889853396. Note that the first 3 decimals are identical.

The spelling of 8180001216 in words is "eight billion, one hundred eighty million, one thousand, two hundred sixteen".