13109779437 has 16 divisors (see below), whose sum is σ = 18101484288. Its totient is φ = 8434370880.

The previous prime is 13109779349. The next prime is 13109779439. The reversal of 13109779437 is 73497790131.

It is not a de Polignac number, because 13109779437 - 2¹¹ = 13109777389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13109779437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13109779439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666133 + ... + 685530.

It is an arithmetic number, because the mean of its divisors is an integer number (1131342768).

Almost surely, 2^13109779437 is an apocalyptic number.

It is an amenable number.

13109779437 is a deficient number, since it is larger than the sum of its proper divisors (4991704851).

13109779437 is a wasteful number, since it uses less digits than its factorization.

13109779437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351780.

The product of its (nonzero) digits is 1000188, while the sum is 51.

The spelling of 13109779437 in words is "thirteen billion, one hundred nine million, seven hundred seventy-nine thousand, four hundred thirty-seven".