180180216381636 has 48 divisors (see below), whose sum is σ = 491719888766400. Its totient is φ = 56899015698816.

The previous prime is 180180216381551. The next prime is 180180216381643. The reversal of 180180216381636 is 636183612081081.

It is a happy number.

180180216381636 is a `hidden beast` number, since 1 + 8 + 0 + 18 + 0 + 216 + 381 + 6 + 36 = 666.

180180216381636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43903559445 + ... + 43903563548.

It is an arithmetic number, because the mean of its divisors is an integer number (10244164349300).

Almost surely, 2^{180180216381636} is an apocalyptic number.

It is an amenable number.

180180216381636 is an abundant number, since it is smaller than the sum of its proper divisors (311539672384764).

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

180180216381636 is a wasteful number, since it uses less digits than its factorization.

180180216381636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87807123025 (or 87807123017 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 180180216381636 in words is "one hundred eighty trillion, one hundred eighty billion, two hundred sixteen million, three hundred eighty-one thousand, six hundred thirty-six".