20623053123 has 6 divisors (see below), whose sum is σ = 29788854524. Its totient is φ = 13748702076.

The previous prime is 20623053103. The next prime is 20623053163. The reversal of 20623053123 is 32135032602.

20623053123 is a `hidden beast` number, since 2 + 0 + 623 + 0 + 5 + 31 + 2 + 3 = 666.

It is not a de Polignac number, because 20623053123 - 2¹³ = 20623044931 is a prime.

It is a super-2 number, since 2×20623053123² (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 (20623053103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1145725165 + ... + 1145725182.

Almost surely, 2^20623053123 is an apocalyptic number.

20623053123 is a deficient number, since it is larger than the sum of its proper divisors (9165801401).

20623053123 is a wasteful number, since it uses less digits than its factorization.

20623053123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291450353 (or 2291450350 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 20623053123 its reverse (32135032602), we get a palindrome (52758085725).

The spelling of 20623053123 in words is "twenty billion, six hundred twenty-three million, fifty-three thousand, one hundred twenty-three".