213442440061604 has 18 divisors (see below), whose sum is σ = 404467109052930. Its totient is φ = 98511895412736.

The previous prime is 213442440061579. The next prime is 213442440061649. The reversal of 213442440061604 is 406160044244312.

It can be written as a sum of positive squares in 3 ways, for example, as 8833675622500 + 204608764439104 = 2972150^2 + 14304152^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 157871626589 + ... + 157871627940.

It is an arithmetic number, because the mean of its divisors is an integer number (22470394947385).

Almost surely, 2^{213442440061604} is an apocalyptic number.

It is an amenable number.

213442440061604 is a deficient number, since it is larger than the sum of its proper divisors (191024668991326).

213442440061604 is a wasteful number, since it uses less digits than its factorization.

213442440061604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315743254559 (or 315743254544 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 213442440061604 in words is "two hundred thirteen trillion, four hundred forty-two billion, four hundred forty million, sixty-one thousand, six hundred four".