13165553421534 has 16 divisors (see below), whose sum is σ = 26331146496000. Its totient is φ = 4388511198360.

The previous prime is 13165553421509. The next prime is 13165553421607. The reversal of 13165553421534 is 43512435556131.

It is a super-2 number, since 2×13165553421534² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4330467 + ... + 6714465.

It is an arithmetic number, because the mean of its divisors is an integer number (1645696656000).

Almost surely, 2^{13165553421534} is an apocalyptic number.

13165553421534 is an abundant number, since it is smaller than the sum of its proper divisors (13165593074466).

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

13165553421534 is a wasteful number, since it uses less digits than its factorization.

13165553421534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304415.

The product of its digits is 3240000, while the sum is 48.

Adding to 13165553421534 its reverse (43512435556131), we get a palindrome (56677988977665).

The spelling of 13165553421534 in words is "thirteen trillion, one hundred sixty-five billion, five hundred fifty-three million, four hundred twenty-one thousand, five hundred thirty-four".