10623445209 has 12 divisors (see below), whose sum is σ = 16525359396. Its totient is φ = 6537504672.

The previous prime is 10623445207. The next prime is 10623445241. The reversal of 10623445209 is 90254432601.

It is a happy number.

10623445209 is a `hidden beast` number, since 1 + 0 + 6 + 2 + 3 + 445 + 209 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 496041984 + 10127403225 = 22272^2 + 100635^2 .

It is not a de Polignac number, because 10623445209 - 2¹ = 10623445207 is a prime.

It is a super-2 number, since 2×10623445209² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10623445201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45399222 + ... + 45399455.

It is an arithmetic number, because the mean of its divisors is an integer number (1377113283).

Almost surely, 2^10623445209 is an apocalyptic number.

It is an amenable number.

10623445209 is a deficient number, since it is larger than the sum of its proper divisors (5901914187).

10623445209 is a wasteful number, since it uses less digits than its factorization.

10623445209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90798696 (or 90798693 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 10623445209 in words is "ten billion, six hundred twenty-three million, four hundred forty-five thousand, two hundred nine".