213805897124 has 12 divisors (see below), whose sum is σ = 374753288448. Its totient is φ = 106733529000.

The previous prime is 213805897117. The next prime is 213805897153. The reversal of 213805897124 is 421798508312.

213805897124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42352052 + ... + 42357099.

It is an arithmetic number, because the mean of its divisors is an integer number (31229440704).

Almost surely, 2^213805897124 is an apocalyptic number.

It is an amenable number.

213805897124 is a deficient number, since it is larger than the sum of its proper divisors (160947391324).

213805897124 is a wasteful number, since it uses less digits than its factorization.

213805897124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84709786 (or 84709784 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 213805897124 in words is "two hundred thirteen billion, eight hundred five million, eight hundred ninety-seven thousand, one hundred twenty-four".