13566321660351 has 8 divisors (see below), whose sum is σ = 18090389297664. Its totient is φ = 9043234231640.

The previous prime is 13566321660341. The next prime is 13566321660371. The reversal of 13566321660351 is 15306612366531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13566321660351 - 2¹⁰ = 13566321659327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13566321660351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13566321660341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245019855 + ... + 245075216.

It is an arithmetic number, because the mean of its divisors is an integer number (2261298662208).

Almost surely, 2^{13566321660351} is an apocalyptic number.

13566321660351 is a deficient number, since it is larger than the sum of its proper divisors (4524067637313).

13566321660351 is an equidigital number, since it uses as much as digits as its factorization.

13566321660351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490104301.

The product of its (nonzero) digits is 1749600, while the sum is 48.

The spelling of 13566321660351 in words is "thirteen trillion, five hundred sixty-six billion, three hundred twenty-one million, six hundred sixty thousand, three hundred fifty-one".