213675020646 has 32 divisors (see below), whose sum is σ = 438929694720. Its totient is φ = 69295324896.

The previous prime is 213675020641. The next prime is 213675020659. The reversal of 213675020646 is 646020576312.

213675020646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213675020598 and 213675020607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213675020641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5037595 + ... + 5079833.

It is an arithmetic number, because the mean of its divisors is an integer number (13716552960).

Almost surely, 2^213675020646 is an apocalyptic number.

213675020646 is an abundant number, since it is smaller than the sum of its proper divisors (225254674074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213675020646 is a wasteful number, since it uses less digits than its factorization.

213675020646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65068.

The product of its (nonzero) digits is 362880, while the sum is 42.

Adding to 213675020646 its reverse (646020576312), we get a palindrome (859695596958).

The spelling of 213675020646 in words is "two hundred thirteen billion, six hundred seventy-five million, twenty thousand, six hundred forty-six".