213400544105 has 12 divisors (see below), whose sum is σ = 297889739460. Its totient is φ = 146331801504.

The previous prime is 213400544069. The next prime is 213400544143. The reversal of 213400544105 is 501445004312.

It can be written as a sum of positive squares in 2 ways, for example, as 118433027881 + 94967516224 = 344141^2 + 308168^2 .

It is not a de Polignac number, because 213400544105 - 2⁶ = 213400544041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435511070 + ... + 435511559.

It is an arithmetic number, because the mean of its divisors is an integer number (24824144955).

Almost surely, 2^213400544105 is an apocalyptic number.

It is an amenable number.

213400544105 is a deficient number, since it is larger than the sum of its proper divisors (84489195355).

213400544105 is an equidigital number, since it uses as much as digits as its factorization.

213400544105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871022648 (or 871022641 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 213400544105 its reverse (501445004312), we get a palindrome (714845548417).

The spelling of 213400544105 in words is "two hundred thirteen billion, four hundred million, five hundred forty-four thousand, one hundred five".