213129549312 has 160 divisors (see below), whose sum is σ = 611592284160. Its totient is φ = 65761935360.

The previous prime is 213129549251. The next prime is 213129549323. The reversal of 213129549312 is 213945921312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997864 + ... + 1192472.

It is an arithmetic number, because the mean of its divisors is an integer number (3822451776).

Almost surely, 2^213129549312 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 213129549312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305796142080).

213129549312 is an abundant number, since it is smaller than the sum of its proper divisors (398462734848).

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

213129549312 is a wasteful number, since it uses less digits than its factorization.

213129549312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194684 (or 194668 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The spelling of 213129549312 in words is "two hundred thirteen billion, one hundred twenty-nine million, five hundred forty-nine thousand, three hundred twelve".