217045132366 has 16 divisors (see below), whose sum is σ = 325956823920. Its totient is φ = 108392926720.

The previous prime is 217045132357. The next prime is 217045132379. The reversal of 217045132366 is 663231540712.

It is a happy number.

It is a super-3 number, since 3×217045132366³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7138356 + ... + 7168696.

It is an arithmetic number, because the mean of its divisors is an integer number (20372301495).

Almost surely, 2^217045132366 is an apocalyptic number.

217045132366 is a deficient number, since it is larger than the sum of its proper divisors (108911691554).

217045132366 is a wasteful number, since it uses less digits than its factorization.

217045132366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34499.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 217045132366 in words is "two hundred seventeen billion, forty-five million, one hundred thirty-two thousand, three hundred sixty-six".