10656666243 has 12 divisors (see below), whose sum is σ = 15461992000. Its totient is φ = 7072584336.

The previous prime is 10656666233. The next prime is 10656666269. The reversal of 10656666243 is 34266665601.

It is not a de Polignac number, because 10656666243 - 2⁶ = 10656666179 is a prime.

It is a super-2 number, since 2×10656666243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10656666203) 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 11 ways as a sum of consecutive naturals, for example, 2652868 + ... + 2656881.

Almost surely, 2^10656666243 is an apocalyptic number.

10656666243 is a deficient number, since it is larger than the sum of its proper divisors (4805325757).

10656666243 is a wasteful number, since it uses less digits than its factorization.

10656666243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309978 (or 5309975 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 10656666243 in words is "ten billion, six hundred fifty-six million, six hundred sixty-six thousand, two hundred forty-three".