13911784913 has 8 divisors (see below), whose sum is σ = 15863212008. Its totient is φ = 12086256384.

The previous prime is 13911784889. The next prime is 13911784921. The reversal of 13911784913 is 31948711931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 587238289 + 13324546624 = 24233^2 + 115432^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13911784913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13911784973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31474406 + ... + 31474847.

It is an arithmetic number, because the mean of its divisors is an integer number (1982901501).

Almost surely, 2^13911784913 is an apocalyptic number.

13911784913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13911784913 is a deficient number, since it is larger than the sum of its proper divisors (1951427095).

13911784913 is a wasteful number, since it uses less digits than its factorization.

13911784913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62949283.

The product of its digits is 163296, while the sum is 47.

The spelling of 13911784913 in words is "thirteen billion, nine hundred eleven million, seven hundred eighty-four thousand, nine hundred thirteen".