180406308641 has 16 divisors (see below), whose sum is σ = 196172203920. Its totient is φ = 164911852800.

The previous prime is 180406308637. The next prime is 180406308647. The reversal of 180406308641 is 146803604081.

It can be written as a sum of positive squares in 8 ways, for example, as 39559221025 + 140847087616 = 198895^2 + 375296^2 .

It is a cyclic number.

It is not a de Polignac number, because 180406308641 - 2² = 180406308637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180406308647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2660231 + ... + 2727203.

It is an arithmetic number, because the mean of its divisors is an integer number (12260762745).

Almost surely, 2^180406308641 is an apocalyptic number.

It is an amenable number.

180406308641 is a deficient number, since it is larger than the sum of its proper divisors (15765895279).

180406308641 is a wasteful number, since it uses less digits than its factorization.

180406308641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68996.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 180406308641 in words is "one hundred eighty billion, four hundred six million, three hundred eight thousand, six hundred forty-one".