213249209808 has 40 divisors (see below), whose sum is σ = 568664563456. Its totient is φ = 68790067200.

The previous prime is 213249209801. The next prime is 213249209861. The reversal of 213249209808 is 808902942312.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213249209801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71654833 + ... + 71657808.

Almost surely, 2^213249209808 is an apocalyptic number.

It is an amenable number.

213249209808 is an abundant number, since it is smaller than the sum of its proper divisors (355415353648).

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

213249209808 is a wasteful number, since it uses less digits than its factorization.

213249209808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143312683 (or 143312677 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 213249209808 in words is "two hundred thirteen billion, two hundred forty-nine million, two hundred nine thousand, eight hundred eight".