13506426145 has 4 divisors (see below), whose sum is σ = 16207711380. Its totient is φ = 10805140912.

The previous prime is 13506426139. The next prime is 13506426149. The reversal of 13506426145 is 54162460531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5034328209 + 8472097936 = 70953^2 + 92044^2 .

It is a cyclic number.

It is not a de Polignac number, because 13506426145 - 2⁵ = 13506426113 is a prime.

It is a super-2 number, since 2×13506426145² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13506426149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350642610 + ... + 1350642619.

It is an arithmetic number, because the mean of its divisors is an integer number (4051927845).

Almost surely, 2^13506426145 is an apocalyptic number.

It is an amenable number.

13506426145 is a deficient number, since it is larger than the sum of its proper divisors (2701285235).

13506426145 is an equidigital number, since it uses as much as digits as its factorization.

13506426145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701285234.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 13506426145 its reverse (54162460531), we get a palindrome (67668886676).

The spelling of 13506426145 in words is "thirteen billion, five hundred six million, four hundred twenty-six thousand, one hundred forty-five".