180418405033021 has 4 divisors (see below), whose sum is σ = 182702182312000. Its totient is φ = 178134627754044.

The previous prime is 180418405032997. The next prime is 180418405033049. The reversal of 180418405033021 is 120330504814081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180418405033021 - 2³¹ = 180416257549373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180418405063021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141888639371 + ... + 1141888639528.

It is an arithmetic number, because the mean of its divisors is an integer number (45675545578000).

Almost surely, 2^{180418405033021} is an apocalyptic number.

It is an amenable number.

180418405033021 is a deficient number, since it is larger than the sum of its proper divisors (2283777278979).

180418405033021 is an equidigital number, since it uses as much as digits as its factorization.

180418405033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283777278978.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 180418405033021 in words is "one hundred eighty trillion, four hundred eighteen billion, four hundred five million, thirty-three thousand, twenty-one".