213578857695 has 16 divisors (see below), whose sum is σ = 390544197120. Its totient is φ = 97636049184.

The previous prime is 213578857637. The next prime is 213578857699. The reversal of 213578857695 is 596758875312.

It is not a de Polignac number, because 213578857695 - 2⁶ = 213578857631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213578857699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017042075 + ... + 1017042284.

It is an arithmetic number, because the mean of its divisors is an integer number (24409012320).

Almost surely, 2^213578857695 is an apocalyptic number.

213578857695 is a deficient number, since it is larger than the sum of its proper divisors (176965339425).

213578857695 is a wasteful number, since it uses less digits than its factorization.

213578857695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034084374.

The product of its digits is 127008000, while the sum is 66.

The spelling of 213578857695 in words is "two hundred thirteen billion, five hundred seventy-eight million, eight hundred fifty-seven thousand, six hundred ninety-five".