13123305445023 has 6 divisors (see below), whose sum is σ = 18955885642824. Its totient is φ = 8748870296676.

The previous prime is 13123305445021. The next prime is 13123305445027. The reversal of 13123305445023 is 32054450332131.

13123305445023 is a `hidden beast` number, since 1 + 3 + 12 + 3 + 30 + 544 + 50 + 23 = 666.

It is not a de Polignac number, because 13123305445023 - 2¹ = 13123305445021 is a prime.

It is a super-2 number, since 2×13123305445023² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123305445021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729072524715 + ... + 729072524732.

It is an arithmetic number, because the mean of its divisors is an integer number (3159314273804).

Almost surely, 2^{13123305445023} is an apocalyptic number.

13123305445023 is a deficient number, since it is larger than the sum of its proper divisors (5832580197801).

13123305445023 is a wasteful number, since it uses less digits than its factorization.

13123305445023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458145049453 (or 1458145049450 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 13123305445023 its reverse (32054450332131), we get a palindrome (45177755777154).

The spelling of 13123305445023 in words is "thirteen trillion, one hundred twenty-three billion, three hundred five million, four hundred forty-five thousand, twenty-three".