213822781488 has 120 divisors (see below), whose sum is σ = 603739136000. Its totient is φ = 70640906112.

The previous prime is 213822781451. The next prime is 213822781531. The reversal of 213822781488 is 884187228312.

213822781488 is a `hidden beast` number, since 2 + 1 + 3 + 82 + 2 + 7 + 81 + 488 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12140913 + ... + 12158511.

Almost surely, 2^213822781488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213822781488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301869568000).

213822781488 is an abundant number, since it is smaller than the sum of its proper divisors (389916354512).

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

213822781488 is a wasteful number, since it uses less digits than its factorization.

213822781488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18359 (or 18350 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The spelling of 213822781488 in words is "two hundred thirteen billion, eight hundred twenty-two million, seven hundred eighty-one thousand, four hundred eighty-eight".