213810329878 has 8 divisors (see below), whose sum is σ = 320843634768. Its totient is φ = 106862451624.

The previous prime is 213810329867. The next prime is 213810329903. The reversal of 213810329878 is 878923018312.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 21350401 + ... + 21360412.

It is an arithmetic number, because the mean of its divisors is an integer number (40105454346).

Almost surely, 2^213810329878 is an apocalyptic number.

213810329878 is a deficient number, since it is larger than the sum of its proper divisors (107033304890).

213810329878 is a wasteful number, since it uses less digits than its factorization.

213810329878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42713318.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 213810329878 in words is "two hundred thirteen billion, eight hundred ten million, three hundred twenty-nine thousand, eight hundred seventy-eight".