164211433133549 has 4 divisors (see below), whose sum is σ = 164211458804064. Its totient is φ = 164211407463036.

The previous prime is 164211433133533. The next prime is 164211433133563. The reversal of 164211433133549 is 945331334112461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 164211433133549 - 2⁴ = 164211433133533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164211433133497 and 164211433133506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164211433133599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5323154 + ... + 18888060.

It is an arithmetic number, because the mean of its divisors is an integer number (41052864701016).

Almost surely, 2^{164211433133549} is an apocalyptic number.

It is an amenable number.

164211433133549 is a deficient number, since it is larger than the sum of its proper divisors (25670515).

164211433133549 is a wasteful number, since it uses less digits than its factorization.

164211433133549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25670514.

The product of its digits is 2799360, while the sum is 50.

The spelling of 164211433133549 in words is "one hundred sixty-four trillion, two hundred eleven billion, four hundred thirty-three million, one hundred thirty-three thousand, five hundred forty-nine".