13665055342520 has 128 divisors (see below), whose sum is σ = 32542022937600. Its totient is φ = 5149971187200.

The previous prime is 13665055342507. The next prime is 13665055342571. The reversal of 13665055342520 is 2524355056631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399885035 + ... + 399919205.

It is an arithmetic number, because the mean of its divisors is an integer number (254234554200).

Almost surely, 2^{13665055342520} is an apocalyptic number.

13665055342520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13665055342520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16271011468800).

13665055342520 is an abundant number, since it is smaller than the sum of its proper divisors (18876967595080).

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

13665055342520 is a wasteful number, since it uses less digits than its factorization.

13665055342520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37069 (or 37065 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 47.

The spelling of 13665055342520 in words is "thirteen trillion, six hundred sixty-five billion, fifty-five million, three hundred forty-two thousand, five hundred twenty".