10506665023 has 4 divisors (see below), whose sum is σ = 11124704160. Its totient is φ = 9888625888.

The previous prime is 10506664999. The next prime is 10506665033. The reversal of 10506665023 is 32056660501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10506665023 is a prime.

It is a super-2 number, since 2×10506665023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10506665023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10506665033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309019543 + ... + 309019576.

It is an arithmetic number, because the mean of its divisors is an integer number (2781176040).

Almost surely, 2^10506665023 is an apocalyptic number.

10506665023 is a deficient number, since it is larger than the sum of its proper divisors (618039137).

10506665023 is an equidigital number, since it uses as much as digits as its factorization.

10506665023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618039136.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 10506665023 in words is "ten billion, five hundred six million, six hundred sixty-five thousand, twenty-three".