18025809984001 has 2 divisors, whose sum is σ = 18025809984002. Its totient is φ = 18025809984000.

The previous prime is 18025809983969. The next prime is 18025809984041. The reversal of 18025809984001 is 10048990852081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10371291761601 + 7654518222400 = 3220449^2 + 2766680^2 .

It is a cyclic number.

It is not a de Polignac number, because 18025809984001 - 2⁵ = 18025809983969 is a prime.

It is not a weakly prime, because it can be changed into another prime (18025809984041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012904992000 + 9012904992001.

It is an arithmetic number, because the mean of its divisors is an integer number (9012904992001).

Almost surely, 2^{18025809984001} is an apocalyptic number.

It is an amenable number.

18025809984001 is a deficient number, since it is larger than the sum of its proper divisors (1).

18025809984001 is an equidigital number, since it uses as much as digits as its factorization.

18025809984001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 55.

The spelling of 18025809984001 in words is "eighteen trillion, twenty-five billion, eight hundred nine million, nine hundred eighty-four thousand, one".