13660205454540 has 144 divisors (see below), whose sum is σ = 41525706077856. Its totient is φ = 3634838323200.

The previous prime is 13660205454529. The next prime is 13660205454589. The reversal of 13660205454540 is 4545450206631.

13660205454540 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 0 + 2 + 0 + 54 + 54 + 540 = 666.

It is a super-2 number, since 2×13660205454540² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195303375 + ... + 195373305.

It is an arithmetic number, because the mean of its divisors is an integer number (288372958874).

Almost surely, 2^{13660205454540} is an apocalyptic number.

13660205454540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13660205454540 is an abundant number, since it is smaller than the sum of its proper divisors (27865500623316).

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

13660205454540 is a wasteful number, since it uses less digits than its factorization.

13660205454540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72280 (or 72275 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 13660205454540 in words is "thirteen trillion, six hundred sixty billion, two hundred five million, four hundred fifty-four thousand, five hundred forty".