13140265646 has 4 divisors (see below), whose sum is σ = 19710398472. Its totient is φ = 6570132822.

The previous prime is 13140265643. The next prime is 13140265739. The reversal of 13140265646 is 64656204131.

13140265646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140265643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3285066410 + ... + 3285066413.

It is an arithmetic number, because the mean of its divisors is an integer number (4927599618).

Almost surely, 2^13140265646 is an apocalyptic number.

13140265646 is a deficient number, since it is larger than the sum of its proper divisors (6570132826).

13140265646 is an equidigital number, since it uses as much as digits as its factorization.

13140265646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570132825.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 13140265646 its reverse (64656204131), we get a palindrome (77796469777).

The spelling of 13140265646 in words is "thirteen billion, one hundred forty million, two hundred sixty-five thousand, six hundred forty-six".