13011026644 has 72 divisors (see below), whose sum is σ = 30415482720. Its totient is φ = 4802414400.

The previous prime is 13011026629. The next prime is 13011026681. The reversal of 13011026644 is 44662011031.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117847 + ... + 199774.

It is an arithmetic number, because the mean of its divisors is an integer number (422437260).

Almost surely, 2^13011026644 is an apocalyptic number.

13011026644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13011026644 is an abundant number, since it is smaller than the sum of its proper divisors (17404456076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13011026644 is a wasteful number, since it uses less digits than its factorization.

13011026644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317669 (or 317660 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 13011026644 its reverse (44662011031), we get a palindrome (57673037675).

The spelling of 13011026644 in words is "thirteen billion, eleven million, twenty-six thousand, six hundred forty-four".