213392489844 has 96 divisors (see below), whose sum is σ = 526258212480. Its totient is φ = 67112990208.

The previous prime is 213392489839. The next prime is 213392489881. The reversal of 213392489844 is 448984293312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86148334 + ... + 86150810.

It is an arithmetic number, because the mean of its divisors is an integer number (5481856380).

Almost surely, 2^213392489844 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 213392489844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263129106240).

213392489844 is an abundant number, since it is smaller than the sum of its proper divisors (312865722636).

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

213392489844 is a wasteful number, since it uses less digits than its factorization.

213392489844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889 (or 3887 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 57.

The spelling of 213392489844 in words is "two hundred thirteen billion, three hundred ninety-two million, four hundred eighty-nine thousand, eight hundred forty-four".