213268771842 has 64 divisors (see below), whose sum is σ = 499728192768. Its totient is φ = 59404032000.

The previous prime is 213268771789. The next prime is 213268771843. The reversal of 213268771842 is 248177862312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213268771843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2333242 + ... + 2422922.

It is an arithmetic number, because the mean of its divisors is an integer number (7808253012).

Almost surely, 2^213268771842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213268771842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249864096384).

213268771842 is an abundant number, since it is smaller than the sum of its proper divisors (286459420926).

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

213268771842 is a wasteful number, since it uses less digits than its factorization.

213268771842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91115.

The product of its digits is 1806336, while the sum is 51.

The spelling of 213268771842 in words is "two hundred thirteen billion, two hundred sixty-eight million, seven hundred seventy-one thousand, eight hundred forty-two".