213219911814 has 128 divisors (see below), whose sum is σ = 538581657600. Its totient is φ = 54767232000.

The previous prime is 213219911809. The next prime is 213219911833. The reversal of 213219911814 is 418119912312.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13401264 + ... + 13417164.

It is an arithmetic number, because the mean of its divisors is an integer number (4207669200).

Almost surely, 2^213219911814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213219911814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269290828800).

213219911814 is an abundant number, since it is smaller than the sum of its proper divisors (325361745786).

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

213219911814 is a wasteful number, since it uses less digits than its factorization.

213219911814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16566.

The product of its digits is 31104, while the sum is 42.

The spelling of 213219911814 in words is "two hundred thirteen billion, two hundred nineteen million, nine hundred eleven thousand, eight hundred fourteen".