13811659772 has 48 divisors (see below), whose sum is σ = 25493201664. Its totient is φ = 6538752000.

The previous prime is 13811659723. The next prime is 13811659793. The reversal of 13811659772 is 27795611831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13811659772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1455122 + ... + 1464582.

It is an arithmetic number, because the mean of its divisors is an integer number (531108368).

Almost surely, 2^13811659772 is an apocalyptic number.

It is an amenable number.

13811659772 is a deficient number, since it is larger than the sum of its proper divisors (11681541892).

13811659772 is a wasteful number, since it uses less digits than its factorization.

13811659772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9750 (or 9748 counting only the distinct ones).

The product of its digits is 635040, while the sum is 50.

The spelling of 13811659772 in words is "thirteen billion, eight hundred eleven million, six hundred fifty-nine thousand, seven hundred seventy-two".