13325314656 has 24 divisors (see below), whose sum is σ = 34978951224. Its totient is φ = 4441771520.

The previous prime is 13325314649. The next prime is 13325314679. The reversal of 13325314656 is 65641352331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×13325314656³ (a number of 31 digits) contains 333 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69402585 + ... + 69402776.

It is an arithmetic number, because the mean of its divisors is an integer number (1457456301).

Almost surely, 2^13325314656 is an apocalyptic number.

13325314656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13325314656 is an abundant number, since it is smaller than the sum of its proper divisors (21653636568).

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

13325314656 is a wasteful number, since it uses less digits than its factorization.

13325314656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138805374 (or 138805366 counting only the distinct ones).

The product of its digits is 194400, while the sum is 39.

Adding to 13325314656 its reverse (65641352331), we get a palindrome (78966666987).

The spelling of 13325314656 in words is "thirteen billion, three hundred twenty-five million, three hundred fourteen thousand, six hundred fifty-six".