180538138995 has 16 divisors (see below), whose sum is σ = 290969500320. Its totient is φ = 95584181504.

The previous prime is 180538138981. The next prime is 180538139009. The reversal of 180538138995 is 599831835081.

It is an interprime number because it is at equal distance from previous prime (180538138981) and next prime (180538139009).

It is a cyclic number.

It is not a de Polignac number, because 180538138995 - 2¹² = 180538134899 is a prime.

It is a super-2 number, since 2×180538138995² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43924500 + ... + 43928609.

It is an arithmetic number, because the mean of its divisors is an integer number (18185593770).

Almost surely, 2^180538138995 is an apocalyptic number.

180538138995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

180538138995 is a deficient number, since it is larger than the sum of its proper divisors (110431361325).

180538138995 is a wasteful number, since it uses less digits than its factorization.

180538138995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87853254.

The product of its (nonzero) digits is 9331200, while the sum is 60.

The spelling of 180538138995 in words is "one hundred eighty billion, five hundred thirty-eight million, one hundred thirty-eight thousand, nine hundred ninety-five".