66263909063 has 16 divisors (see below), whose sum is σ = 74232398592. Its totient is φ = 58629480000.

The previous prime is 66263909027. The next prime is 66263909071. The reversal of 66263909063 is 36090936266.

It is a cyclic number.

It is not a de Polignac number, because 66263909063 - 2⁶ = 66263908999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66263909093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116363 + ... + 382188.

It is an arithmetic number, because the mean of its divisors is an integer number (4639524912).

Almost surely, 2^66263909063 is an apocalyptic number.

66263909063 is a deficient number, since it is larger than the sum of its proper divisors (7968489529).

66263909063 is a wasteful number, since it uses less digits than its factorization.

66263909063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498886.

The product of its (nonzero) digits is 1889568, while the sum is 50.

The spelling of 66263909063 in words is "sixty-six billion, two hundred sixty-three million, nine hundred nine thousand, sixty-three".