666102623263 has 24 divisors (see below), whose sum is σ = 845389961424. Its totient is φ = 518982912000.

The previous prime is 666102623209. The next prime is 666102623273. The reversal of 666102623263 is 362326201666.

It is not a de Polignac number, because 666102623263 - 2¹³ = 666102615071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666102623273) 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 in 23 ways as a sum of consecutive naturals, for example, 5110581 + ... + 5239297.

It is an arithmetic number, because the mean of its divisors is an integer number (35224581726).

Almost surely, 2^666102623263 is an apocalyptic number.

666102623263 is a deficient number, since it is larger than the sum of its proper divisors (179287338161).

666102623263 is a wasteful number, since it uses less digits than its factorization.

666102623263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138343 (or 138336 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 666102623263 in words is "six hundred sixty-six billion, one hundred two million, six hundred twenty-three thousand, two hundred sixty-three".