213571068408 has 96 divisors (see below), whose sum is σ = 612633209760. Its totient is φ = 66982256640.

The previous prime is 213571068401. The next prime is 213571068463. The reversal of 213571068408 is 804860175312.

213571068408 is a `hidden beast` number, since 2 + 13 + 571 + 0 + 68 + 4 + 0 + 8 = 666.

213571068408 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213571068408² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213571068401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4272616 + ... + 4322312.

It is an arithmetic number, because the mean of its divisors is an integer number (6381595935).

Almost surely, 2^213571068408 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 213571068408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306316604880).

213571068408 is an abundant number, since it is smaller than the sum of its proper divisors (399062141352).

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

213571068408 is a wasteful number, since it uses less digits than its factorization.

213571068408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53237 (or 53230 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 213571068408 in words is "two hundred thirteen billion, five hundred seventy-one million, sixty-eight thousand, four hundred eight".