213344546549 has 4 divisors (see below), whose sum is σ = 213586160736. Its totient is φ = 213102932364.

The previous prime is 213344546539. The next prime is 213344546561. The reversal of 213344546549 is 945645443312.

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.

It is a cyclic number.

It is not a de Polignac number, because 213344546549 - 2⁸ = 213344546293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213344546497 and 213344546506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213344546539) 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, 120805769 + ... + 120807534.

It is an arithmetic number, because the mean of its divisors is an integer number (53396540184).

Almost surely, 2^213344546549 is an apocalyptic number.

It is an amenable number.

213344546549 is a deficient number, since it is larger than the sum of its proper divisors (241614187).

213344546549 is an equidigital number, since it uses as much as digits as its factorization.

213344546549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241614186.

The product of its digits is 6220800, while the sum is 50.

The spelling of 213344546549 in words is "two hundred thirteen billion, three hundred forty-four million, five hundred forty-six thousand, five hundred forty-nine".