180643664101 has 8 divisors (see below), whose sum is σ = 188213601024. Its totient is φ = 173182647360.

The previous prime is 180643664087. The next prime is 180643664171. The reversal of 180643664101 is 101466346081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180643664101 - 2⁷ = 180643663973 is a prime.

It is a super-2 number, since 2×180643664101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180643664171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27226660 + ... + 27233293.

It is an arithmetic number, because the mean of its divisors is an integer number (23526700128).

Almost surely, 2^180643664101 is an apocalyptic number.

It is an amenable number.

180643664101 is a deficient number, since it is larger than the sum of its proper divisors (7569936923).

180643664101 is a wasteful number, since it uses less digits than its factorization.

180643664101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54460091.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 180643664101 in words is "one hundred eighty billion, six hundred forty-three million, six hundred sixty-four thousand, one hundred one".