213351146646 has 16 divisors (see below), whose sum is σ = 465493411008. Its totient is φ = 64651862600.

The previous prime is 213351146597. The next prime is 213351146693. The reversal of 213351146646 is 646641153312.

It is a happy number.

213351146646 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 = 213351146598 and 213351146607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616296500 + ... + 1616296631.

It is an arithmetic number, because the mean of its divisors is an integer number (29093338188).

Almost surely, 2^213351146646 is an apocalyptic number.

213351146646 is an abundant number, since it is smaller than the sum of its proper divisors (252142264362).

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

213351146646 is a wasteful number, since it uses less digits than its factorization.

213351146646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232593147.

The product of its digits is 311040, while the sum is 42.

Adding to 213351146646 its reverse (646641153312), we get a palindrome (859992299958).

The spelling of 213351146646 in words is "two hundred thirteen billion, three hundred fifty-one million, one hundred forty-six thousand, six hundred forty-six".