213686853378 has 16 divisors (see below), whose sum is σ = 427434731136. Its totient is φ = 71218780400.

The previous prime is 213686853377. The next prime is 213686853389. The reversal of 213686853378 is 873358686312.

It is not an unprimeable number, because it can be changed into a prime (213686853377) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2497098 + ... + 2581253.

It is an arithmetic number, because the mean of its divisors is an integer number (26714670696).

Almost surely, 2^213686853378 is an apocalyptic number.

213686853378 is an abundant number, since it is smaller than the sum of its proper divisors (213747877758).

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

213686853378 is a wasteful number, since it uses less digits than its factorization.

213686853378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085369.

The product of its digits is 34836480, while the sum is 60.

The spelling of 213686853378 in words is "two hundred thirteen billion, six hundred eighty-six million, eight hundred fifty-three thousand, three hundred seventy-eight".