180971342643 has 54 divisors (see below), whose sum is σ = 304055346924. Its totient is φ = 95422043808.

The previous prime is 180971342641. The next prime is 180971342677. The reversal of 180971342643 is 346243179081.

180971342643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 180971342643 - 2¹ = 180971342641 is a prime.

It is a super-2 number, since 2×180971342643² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180971342592 and 180971342601.

It is not an unprimeable number, because it can be changed into a prime (180971342641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 67049908 + ... + 67052606.

Almost surely, 2^180971342643 is an apocalyptic number.

180971342643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

180971342643 is a deficient number, since it is larger than the sum of its proper divisors (123084004281).

180971342643 is an frugal number, since it uses more digits than its factorization.

180971342643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

Multiplying 180971342643 by its sum of digits (48), we get a square (8686624446864 = 2947308²).

The spelling of 180971342643 in words is "one hundred eighty billion, nine hundred seventy-one million, three hundred forty-two thousand, six hundred forty-three".