66145414463 has 2 divisors, whose sum is σ = 66145414464. Its totient is φ = 66145414462.

The previous prime is 66145414453. The next prime is 66145414471. The reversal of 66145414463 is 36441454166.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66145414463 - 2⁶ = 66145414399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66145414453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33072707231 + 33072707232.

It is an arithmetic number, because the mean of its divisors is an integer number (33072707232).

Almost surely, 2^66145414463 is an apocalyptic number.

66145414463 is a deficient number, since it is larger than the sum of its proper divisors (1).

66145414463 is an equidigital number, since it uses as much as digits as its factorization.

66145414463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 44.

The spelling of 66145414463 in words is "sixty-six billion, one hundred forty-five million, four hundred fourteen thousand, four hundred sixty-three".