13065506553 has 48 divisors (see below), whose sum is σ = 20341722240. Its totient is φ = 7428072960.

The previous prime is 13065506479. The next prime is 13065506591. The reversal of 13065506553 is 35560556031.

It is not a de Polignac number, because 13065506553 - 2⁸ = 13065506297 is a prime.

It is a super-2 number, since 2×13065506553² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13065506053) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1952868 + ... + 1959546.

It is an arithmetic number, because the mean of its divisors is an integer number (423785880).

Almost surely, 2^13065506553 is an apocalyptic number.

It is an amenable number.

13065506553 is a deficient number, since it is larger than the sum of its proper divisors (7276215687).

13065506553 is a wasteful number, since it uses less digits than its factorization.

13065506553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038 (or 7027 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 39.

The spelling of 13065506553 in words is "thirteen billion, sixty-five million, five hundred six thousand, five hundred fifty-three".