13691982625 has 8 divisors (see below), whose sum is σ = 17087594472. Its totient is φ = 10953586000.

The previous prime is 13691982607. The next prime is 13691982641. The reversal of 13691982625 is 52628919631.

It can be written as a sum of positive squares in 4 ways, for example, as 53479969 + 13638502656 = 7313^2 + 116784^2 .

It is not a de Polignac number, because 13691982625 - 2¹³ = 13691974433 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 54767806 + ... + 54768055.

It is an arithmetic number, because the mean of its divisors is an integer number (2135949309).

Almost surely, 2^13691982625 is an apocalyptic number.

It is an amenable number.

13691982625 is a deficient number, since it is larger than the sum of its proper divisors (3395611847).

13691982625 is an equidigital number, since it uses as much as digits as its factorization.

13691982625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109535876 (or 109535866 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The spelling of 13691982625 in words is "thirteen billion, six hundred ninety-one million, nine hundred eighty-two thousand, six hundred twenty-five".