213840876786 has 16 divisors (see below), whose sum is σ = 430758602400. Its totient is φ = 70767484128.

The previous prime is 213840876731. The next prime is 213840876811. The reversal of 213840876786 is 687678048312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128201131 + ... + 128202798.

It is an arithmetic number, because the mean of its divisors is an integer number (26922412650).

Almost surely, 2^213840876786 is an apocalyptic number.

213840876786 is an abundant number, since it is smaller than the sum of its proper divisors (216917725614).

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

213840876786 is a wasteful number, since it uses less digits than its factorization.

213840876786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256404073.

The product of its (nonzero) digits is 21676032, while the sum is 60.

The spelling of 213840876786 in words is "two hundred thirteen billion, eight hundred forty million, eight hundred seventy-six thousand, seven hundred eighty-six".