667216217503 has 32 divisors (see below), whose sum is σ = 777539930112. Its totient is φ = 566434360800.

The previous prime is 667216217501. The next prime is 667216217509. The reversal of 667216217503 is 305712612766.

It is not a de Polignac number, because 667216217503 - 2¹ = 667216217501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667216217501) 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 31 ways as a sum of consecutive naturals, for example, 25781176 + ... + 25807042.

It is an arithmetic number, because the mean of its divisors is an integer number (24298122816).

Almost surely, 2^667216217503 is an apocalyptic number.

667216217503 is a deficient number, since it is larger than the sum of its proper divisors (110323712609).

667216217503 is a wasteful number, since it uses less digits than its factorization.

667216217503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28315.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 667216217503 in words is "six hundred sixty-seven billion, two hundred sixteen million, two hundred seventeen thousand, five hundred three".