180017738374231 has 2 divisors, whose sum is σ = 180017738374232. Its totient is φ = 180017738374230.

The previous prime is 180017738374219. The next prime is 180017738374349. The reversal of 180017738374231 is 132473837710081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 180017738374231 - 2⁴¹ = 177818715118679 is a prime.

It is a super-2 number, since 2×180017738374231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180017738374631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90008869187115 + 90008869187116.

It is an arithmetic number, because the mean of its divisors is an integer number (90008869187116).

Almost surely, 2^{180017738374231} is an apocalyptic number.

180017738374231 is a deficient number, since it is larger than the sum of its proper divisors (1).

180017738374231 is an equidigital number, since it uses as much as digits as its factorization.

180017738374231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 180017738374231 in words is "one hundred eighty trillion, seventeen billion, seven hundred thirty-eight million, three hundred seventy-four thousand, two hundred thirty-one".