667216264485 has 16 divisors (see below), whose sum is σ = 1068066065664. Its totient is φ = 355675326912.

The previous prime is 667216264483. The next prime is 667216264487. The reversal of 667216264485 is 584462612766.

It is an interprime number because it is at equal distance from previous prime (667216264483) and next prime (667216264487).

It is not a de Polignac number, because 667216264485 - 2¹ = 667216264483 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667216264483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10802397 + ... + 10863986.

It is an arithmetic number, because the mean of its divisors is an integer number (66754129104).

Almost surely, 2^667216264485 is an apocalyptic number.

It is an amenable number.

667216264485 is a deficient number, since it is larger than the sum of its proper divisors (400849801179).

667216264485 is a wasteful number, since it uses less digits than its factorization.

667216264485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21668444.

The product of its digits is 23224320, while the sum is 57.

The spelling of 667216264485 in words is "six hundred sixty-seven billion, two hundred sixteen million, two hundred sixty-four thousand, four hundred eighty-five".