13164116604421 has 4 divisors (see below), whose sum is σ = 13165242813100. Its totient is φ = 13162990395744.

The previous prime is 13164116604409. The next prime is 13164116604461. The reversal of 13164116604421 is 12440661146131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11889814281921 + 1274302322500 = 3448161^2 + 1128850^2 .

It is a cyclic number.

It is not a de Polignac number, because 13164116604421 - 2¹⁷ = 13164116473349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13164116604461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563086806 + ... + 563110183.

It is an arithmetic number, because the mean of its divisors is an integer number (3291310703275).

Almost surely, 2^{13164116604421} is an apocalyptic number.

It is an amenable number.

13164116604421 is a deficient number, since it is larger than the sum of its proper divisors (1126208679).

13164116604421 is a wasteful number, since it uses less digits than its factorization.

13164116604421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126208678.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 13164116604421 in words is "thirteen trillion, one hundred sixty-four billion, one hundred sixteen million, six hundred four thousand, four hundred twenty-one".