13658666948408 has 8 divisors (see below), whose sum is σ = 25610000528280. Its totient is φ = 6829333474200.

The previous prime is 13658666948393. The next prime is 13658666948429. The reversal of 13658666948408 is 80484966685631.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853666684268 + ... + 853666684283.

It is an arithmetic number, because the mean of its divisors is an integer number (3201250066035).

Almost surely, 2^{13658666948408} is an apocalyptic number.

It is an amenable number.

13658666948408 is a deficient number, since it is larger than the sum of its proper divisors (11951333579872).

13658666948408 is a wasteful number, since it uses less digits than its factorization.

13658666948408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707333368557 (or 1707333368553 counting only the distinct ones).

The product of its (nonzero) digits is 1433272320, while the sum is 74.

The spelling of 13658666948408 in words is "thirteen trillion, six hundred fifty-eight billion, six hundred sixty-six million, nine hundred forty-eight thousand, four hundred eight".