213545667217375 has 32 divisors (see below), whose sum is σ = 267509154407040. Its totient is φ = 170193772800000.

The previous prime is 213545667217367. The next prime is 213545667217397. The reversal of 213545667217375 is 573712766545312.

It is a happy number.

It is not a de Polignac number, because 213545667217375 - 2³ = 213545667217367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43486975 + ... + 48147775.

It is an arithmetic number, because the mean of its divisors is an integer number (8359661075220).

Almost surely, 2^{213545667217375} is an apocalyptic number.

213545667217375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213545667217375 is a deficient number, since it is larger than the sum of its proper divisors (53963487189665).

213545667217375 is a wasteful number, since it uses less digits than its factorization.

213545667217375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662196 (or 4662186 counting only the distinct ones).

The product of its digits is 222264000, while the sum is 64.

The spelling of 213545667217375 in words is "two hundred thirteen trillion, five hundred forty-five billion, six hundred sixty-seven million, two hundred seventeen thousand, three hundred seventy-five".