217067535142 has 8 divisors (see below), whose sum is σ = 326072507832. Its totient is φ = 108376699200.

The previous prime is 217067535133. The next prime is 217067535169. The reversal of 217067535142 is 241535760712.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78532459 + ... + 78535222.

It is an arithmetic number, because the mean of its divisors is an integer number (40759063479).

Almost surely, 2^217067535142 is an apocalyptic number.

217067535142 is a deficient number, since it is larger than the sum of its proper divisors (109004972690).

217067535142 is a wasteful number, since it uses less digits than its factorization.

217067535142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157068374.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 217067535142 in words is "two hundred seventeen billion, sixty-seven million, five hundred thirty-five thousand, one hundred forty-two".