13660652643420 has 48 divisors (see below), whose sum is σ = 38336956922880. Its totient is φ = 3634542655296.

The previous prime is 13660652643413. The next prime is 13660652643433. The reversal of 13660652643420 is 2434625606631.

It is a super-2 number, since 2×13660652643420² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13660652643420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259287492 + ... + 259340171.

It is an arithmetic number, because the mean of its divisors is an integer number (798686602560).

Almost surely, 2^{13660652643420} is an apocalyptic number.

13660652643420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13660652643420 is an abundant number, since it is smaller than the sum of its proper divisors (24676304279460).

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

13660652643420 is a wasteful number, since it uses less digits than its factorization.

13660652643420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518628114 (or 518628112 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 48.

The spelling of 13660652643420 in words is "thirteen trillion, six hundred sixty billion, six hundred fifty-two million, six hundred forty-three thousand, four hundred twenty".