13123611026 has 4 divisors (see below), whose sum is σ = 19685416542. Its totient is φ = 6561805512.

The previous prime is 13123610987. The next prime is 13123611029. The reversal of 13123611026 is 62011632131.

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

It can be written as a sum of positive squares in only one way, i.e., 8054883001 + 5068728025 = 89749^2 + 71195^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13123610986 and 13123611004.

It is not an unprimeable number, because it can be changed into a prime (13123611029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280902755 + ... + 3280902758.

Almost surely, 2^13123611026 is an apocalyptic number.

13123611026 is a deficient number, since it is larger than the sum of its proper divisors (6561805516).

13123611026 is an equidigital number, since it uses as much as digits as its factorization.

13123611026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6561805515.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 13123611026 in words is "thirteen billion, one hundred twenty-three million, six hundred eleven thousand, twenty-six".