180385140405 has 32 divisors (see below), whose sum is σ = 299136182400. Its totient is φ = 92746467072.

The previous prime is 180385140401. The next prime is 180385140427. The reversal of 180385140405 is 504041583081.

It is not a de Polignac number, because 180385140405 - 2² = 180385140401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180385140401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1430415 + ... + 1551404.

It is an arithmetic number, because the mean of its divisors is an integer number (9348005700).

Almost surely, 2^180385140405 is an apocalyptic number.

180385140405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

180385140405 is a deficient number, since it is larger than the sum of its proper divisors (118751041995).

180385140405 is a wasteful number, since it uses less digits than its factorization.

180385140405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981973.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 180385140405 in words is "one hundred eighty billion, three hundred eighty-five million, one hundred forty thousand, four hundred five".