13135309632556 has 96 divisors (see below), whose sum is σ = 24832785600000. Its totient is φ = 6060435655680.

The previous prime is 13135309632553. The next prime is 13135309632583. The reversal of 13135309632556 is 65523690353131.

It is not an unprimeable number, because it can be changed into a prime (13135309632553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2479761300 + ... + 2479766596.

It is an arithmetic number, because the mean of its divisors is an integer number (258674850000).

Almost surely, 2^{13135309632556} is an apocalyptic number.

It is an amenable number.

13135309632556 is a deficient number, since it is larger than the sum of its proper divisors (11697475967444).

13135309632556 is a wasteful number, since it uses less digits than its factorization.

13135309632556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487 (or 10485 counting only the distinct ones).

The product of its (nonzero) digits is 6561000, while the sum is 52.

Adding to 13135309632556 its reverse (65523690353131), we get a palindrome (78658999985687).

The spelling of 13135309632556 in words is "thirteen trillion, one hundred thirty-five billion, three hundred nine million, six hundred thirty-two thousand, five hundred fifty-six".