10500043666 has 64 divisors (see below), whose sum is σ = 19477979136. Its totient is φ = 4149532800.

The previous prime is 10500043661. The next prime is 10500043667. The reversal of 10500043666 is 66634000501.

It is a super-2 number, since 2×10500043666² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (10500043661) 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 31 ways as a sum of consecutive naturals, for example, 758281 + ... + 772003.

It is an arithmetic number, because the mean of its divisors is an integer number (304343424).

Almost surely, 2^10500043666 is an apocalyptic number.

10500043666 is a deficient number, since it is larger than the sum of its proper divisors (8977935470).

10500043666 is a wasteful number, since it uses less digits than its factorization.

10500043666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13847.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 10500043666 in words is "ten billion, five hundred million, forty-three thousand, six hundred sixty-six".