180869436216 has 192 divisors, whose sum is σ = 595471111200. Its totient is φ = 50701787136.

The previous prime is 180869436199. The next prime is 180869436221. The reversal of 180869436216 is 612634968081.

180869436216 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 6 + 9 + 4 + 3 + 621 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 399736 + ... + 722168.

Almost surely, 2^180869436216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180869436216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297735555600).

180869436216 is an abundant number, since it is smaller than the sum of its proper divisors (414601674984).

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

180869436216 is a wasteful number, since it uses less digits than its factorization.

180869436216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322515 (or 322498 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 180869436216 in words is "one hundred eighty billion, eight hundred sixty-nine million, four hundred thirty-six thousand, two hundred sixteen".