13566001566450 has 48 divisors (see below), whose sum is σ = 33648769242720. Its totient is φ = 3617053605120.

The previous prime is 13566001566443. The next prime is 13566001566461. The reversal of 13566001566450 is 5466510066531.

It is a self number, because there is not a number n which added to its sum of digits gives 13566001566450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5838999 + ... + 7824698.

It is an arithmetic number, because the mean of its divisors is an integer number (701016025890).

Almost surely, 2^{13566001566450} is an apocalyptic number.

13566001566450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13566001566450 is an abundant number, since it is smaller than the sum of its proper divisors (20082767676270).

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

13566001566450 is a wasteful number, since it uses less digits than its factorization.

13566001566450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13670331 (or 13670326 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 13566001566450 in words is "thirteen trillion, five hundred sixty-six billion, one million, five hundred sixty-six thousand, four hundred fifty".