13640726332 has 36 divisors (see below), whose sum is σ = 24334838640. Its totient is φ = 6689353792.

The previous prime is 13640726321. The next prime is 13640726369. The reversal of 13640726332 is 23362704631.

It is a junction number, because it is equal to n+sod(n) for n = 13640726291 and 13640726300.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 28477269 + ... + 28477747.

It is an arithmetic number, because the mean of its divisors is an integer number (675967740).

Almost surely, 2^13640726332 is an apocalyptic number.

It is an amenable number.

13640726332 is a deficient number, since it is larger than the sum of its proper divisors (10694112308).

13640726332 is an equidigital number, since it uses as much as digits as its factorization.

13640726332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 37.

The spelling of 13640726332 in words is "thirteen billion, six hundred forty million, seven hundred twenty-six thousand, three hundred thirty-two".