13000023613 has 4 divisors (see below), whose sum is σ = 13001290848. Its totient is φ = 12998756380.

The previous prime is 13000023599. The next prime is 13000023623. The reversal of 13000023613 is 31632000031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13000023613 - 2¹⁷ = 12999892541 is a prime.

It is a super-2 number, since 2×13000023613² (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 (13000023623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618103 + ... + 638788.

It is an arithmetic number, because the mean of its divisors is an integer number (3250322712).

Almost surely, 2^13000023613 is an apocalyptic number.

It is an amenable number.

13000023613 is a deficient number, since it is larger than the sum of its proper divisors (1267235).

13000023613 is a wasteful number, since it uses less digits than its factorization.

13000023613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267234.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13000023613 its reverse (31632000031), we get a palindrome (44632023644).

The spelling of 13000023613 in words is "thirteen billion, twenty-three thousand, six hundred thirteen".