18145453023457 has 2 divisors, whose sum is σ = 18145453023458. Its totient is φ = 18145453023456.

The previous prime is 18145453023443. The next prime is 18145453023553. The reversal of 18145453023457 is 75432035454181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18132812293696 + 12640729761 = 4258264^2 + 112431^2 .

It is a cyclic number.

It is not a de Polignac number, because 18145453023457 - 2²⁷ = 18145318805729 is a prime.

It is not a weakly prime, because it can be changed into another prime (18145453023407) 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, 9072726511728 + 9072726511729.

It is an arithmetic number, because the mean of its divisors is an integer number (9072726511729).

Almost surely, 2^{18145453023457} is an apocalyptic number.

It is an amenable number.

18145453023457 is a deficient number, since it is larger than the sum of its proper divisors (1).

18145453023457 is an equidigital number, since it uses as much as digits as its factorization.

18145453023457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 18145453023457 in words is "eighteen trillion, one hundred forty-five billion, four hundred fifty-three million, twenty-three thousand, four hundred fifty-seven".