213544325336561 has 8 divisors (see below), whose sum is σ = 213991651699200. Its totient is φ = 213097005281440.

The previous prime is 213544325336497. The next prime is 213544325336569. The reversal of 213544325336561 is 165633523445312.

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 213544325336561 - 2⁶ = 213544325336497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213544325336569) 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, 69562460 + ... + 72567378.

It is an arithmetic number, because the mean of its divisors is an integer number (26748956462400).

Almost surely, 2^{213544325336561} is an apocalyptic number.

It is an amenable number.

213544325336561 is a deficient number, since it is larger than the sum of its proper divisors (447326362639).

213544325336561 is a wasteful number, since it uses less digits than its factorization.

213544325336561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153759.

The product of its digits is 23328000, while the sum is 53.

The spelling of 213544325336561 in words is "two hundred thirteen trillion, five hundred forty-four billion, three hundred twenty-five million, three hundred thirty-six thousand, five hundred sixty-one".