213158721852 has 48 divisors (see below), whose sum is σ = 554139640320. Its totient is φ = 70859289456.

The previous prime is 213158721829. The next prime is 213158721857. The reversal of 213158721852 is 258127851312.

213158721852 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 587 + 2 + 18 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 213158721798 and 213158721807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213158721857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2649318 + ... + 2728589.

It is an arithmetic number, because the mean of its divisors is an integer number (11544575840).

Almost surely, 2^213158721852 is an apocalyptic number.

It is an amenable number.

213158721852 is an abundant number, since it is smaller than the sum of its proper divisors (340980918468).

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

213158721852 is a wasteful number, since it uses less digits than its factorization.

213158721852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5378287 (or 5378279 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The spelling of 213158721852 in words is "two hundred thirteen billion, one hundred fifty-eight million, seven hundred twenty-one thousand, eight hundred fifty-two".