213054044776431 has 4 divisors (see below), whose sum is σ = 284072059701912. Its totient is φ = 142036029850952.

The previous prime is 213054044776411. The next prime is 213054044776439. The reversal of 213054044776431 is 134677440450312.

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

It is a cyclic number.

It is not a de Polignac number, because 213054044776431 - 2⁷ = 213054044776303 is a prime.

It is a super-2 number, since 2×213054044776431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213054044776439) 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, 35509007462736 + ... + 35509007462741.

It is an arithmetic number, because the mean of its divisors is an integer number (71018014925478).

Almost surely, 2^{213054044776431} is an apocalyptic number.

213054044776431 is a deficient number, since it is larger than the sum of its proper divisors (71018014925481).

213054044776431 is an equidigital number, since it uses as much as digits as its factorization.

213054044776431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71018014925480.

The product of its (nonzero) digits is 6773760, while the sum is 51.

The spelling of 213054044776431 in words is "two hundred thirteen trillion, fifty-four billion, forty-four million, seven hundred seventy-six thousand, four hundred thirty-one".