13420530623 has 4 divisors (see below), whose sum is σ = 14126874360. Its totient is φ = 12714186888.

The previous prime is 13420530589. The next prime is 13420530671. The reversal of 13420530623 is 32603502431.

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

It is a cyclic number.

It is not a de Polignac number, because 13420530623 - 2⁶ = 13420530559 is a prime.

It is a super-2 number, since 2×13420530623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420530223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353171840 + ... + 353171877.

It is an arithmetic number, because the mean of its divisors is an integer number (3531718590).

Almost surely, 2^13420530623 is an apocalyptic number.

13420530623 is a deficient number, since it is larger than the sum of its proper divisors (706343737).

13420530623 is an equidigital number, since it uses as much as digits as its factorization.

13420530623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706343736.

The product of its (nonzero) digits is 12960, while the sum is 29.

The spelling of 13420530623 in words is "thirteen billion, four hundred twenty million, five hundred thirty thousand, six hundred twenty-three".