13626220647 has 64 divisors (see below), whose sum is σ = 20958013440. Its totient is φ = 7800883200.

The previous prime is 13626220631. The next prime is 13626220649. The reversal of 13626220647 is 74602262631.

13626220647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13626220647 - 2⁴ = 13626220631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13626220649) 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 in 63 ways as a sum of consecutive naturals, for example, 32520604 + ... + 32521022.

It is an arithmetic number, because the mean of its divisors is an integer number (327468960).

Almost surely, 2^13626220647 is an apocalyptic number.

13626220647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13626220647 is a deficient number, since it is larger than the sum of its proper divisors (7331792793).

13626220647 is a wasteful number, since it uses less digits than its factorization.

13626220647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 13626220647 in words is "thirteen billion, six hundred twenty-six million, two hundred twenty thousand, six hundred forty-seven".