180399997836396 has 288 divisors, whose sum is σ = 526427627980800. Its totient is φ = 53717035913280.

The previous prime is 180399997836391. The next prime is 180399997836587. The reversal of 180399997836396 is 693638799993081.

180399997836396 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 9 + 9 + 99 + 78 + 363 + 96 = 666.

It is not an unprimeable number, because it can be changed into a prime (180399997836391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 285245095 + ... + 285876833.

Almost surely, 2^{180399997836396} 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 180399997836396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263213813990400).

180399997836396 is an abundant number, since it is smaller than the sum of its proper divisors (346027630144404).

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

180399997836396 is an equidigital number, since it uses as much as digits as its factorization.

180399997836396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631820 (or 631788 counting only the distinct ones).

The product of its (nonzero) digits is 25713241344, while the sum is 90.

The spelling of 180399997836396 in words is "one hundred eighty trillion, three hundred ninety-nine billion, nine hundred ninety-seven million, eight hundred thirty-six thousand, three hundred ninety-six".