213406146322644 has 24 divisors (see below), whose sum is σ = 543215645185248. Its totient is φ = 64668529188640.

The previous prime is 213406146322591. The next prime is 213406146322657. The reversal of 213406146322644 is 446223641604312.

It is a junction number, because it is equal to n+sod(n) for n = 213406146322593 and 213406146322602.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 808356614727 + ... + 808356614990.

It is an arithmetic number, because the mean of its divisors is an integer number (22633985216052).

Almost surely, 2^{213406146322644} is an apocalyptic number.

It is an amenable number.

213406146322644 is an abundant number, since it is smaller than the sum of its proper divisors (329809498862604).

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

213406146322644 is a wasteful number, since it uses less digits than its factorization.

213406146322644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616713229735 (or 1616713229733 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

Adding to 213406146322644 its reverse (446223641604312), we get a palindrome (659629787926956).

The spelling of 213406146322644 in words is "two hundred thirteen trillion, four hundred six billion, one hundred forty-six million, three hundred twenty-two thousand, six hundred forty-four".