18264544801 has 2 divisors, whose sum is σ = 18264544802. Its totient is φ = 18264544800.

The previous prime is 18264544763. The next prime is 18264544871. The reversal of 18264544801 is 10844546281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13984245025 + 4280299776 = 118255^2 + 65424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18264544801 is a prime.

It is a super-2 number, since 2×18264544801² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18264544871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9132272400 + 9132272401.

It is an arithmetic number, because the mean of its divisors is an integer number (9132272401).

Almost surely, 2^18264544801 is an apocalyptic number.

It is an amenable number.

18264544801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18264544801 is an equidigital number, since it uses as much as digits as its factorization.

18264544801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 18264544801 in words is "eighteen billion, two hundred sixty-four million, five hundred forty-four thousand, eight hundred one".