13664730131 has 4 divisors (see below), whose sum is σ = 14715863232. Its totient is φ = 12613597032.

The previous prime is 13664730119. The next prime is 13664730143. The reversal of 13664730131 is 13103746631.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (13664730119) and next prime (13664730143).

It is a cyclic number.

It is not a de Polignac number, because 13664730131 - 2²⁶ = 13597621267 is a prime.

It is a super-2 number, since 2×13664730131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13664730091 and 13664730100.

It is not an unprimeable number, because it can be changed into a prime (13664730151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525566531 + ... + 525566556.

It is an arithmetic number, because the mean of its divisors is an integer number (3678965808).

Almost surely, 2^13664730131 is an apocalyptic number.

13664730131 is a deficient number, since it is larger than the sum of its proper divisors (1051133101).

13664730131 is a wasteful number, since it uses less digits than its factorization.

13664730131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051133100.

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 13664730131 in words is "thirteen billion, six hundred sixty-four million, seven hundred thirty thousand, one hundred thirty-one".