13388528780256 has 48 divisors (see below), whose sum is σ = 40165586342784. Its totient is φ = 3825293937024.

The previous prime is 13388528780197. The next prime is 13388528780257. The reversal of 13388528780256 is 65208782588331.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13388528780257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9961702290 + ... + 9961703633.

It is an arithmetic number, because the mean of its divisors is an integer number (836783048808).

Almost surely, 2^{13388528780256} is an apocalyptic number.

13388528780256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13388528780256 is an abundant number, since it is smaller than the sum of its proper divisors (26777057562528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13388528780256 is a wasteful number, since it uses less digits than its factorization.

13388528780256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19923405943 (or 19923405935 counting only the distinct ones).

The product of its (nonzero) digits is 154828800, while the sum is 66.

The spelling of 13388528780256 in words is "thirteen trillion, three hundred eighty-eight billion, five hundred twenty-eight million, seven hundred eighty thousand, two hundred fifty-six".