66667312635023 has 8 divisors (see below), whose sum is σ = 67533297190992. Its totient is φ = 65805826700736.

The previous prime is 66667312634981. The next prime is 66667312635029. The reversal of 66667312635023 is 32053621376666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66667312635023 - 2¹² = 66667312630927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66667312635023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66667312635029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124625590 + ... + 1124684867.

It is an arithmetic number, because the mean of its divisors is an integer number (8441662148874).

Almost surely, 2^{66667312635023} is an apocalyptic number.

66667312635023 is a deficient number, since it is larger than the sum of its proper divisors (865984555969).

66667312635023 is a wasteful number, since it uses less digits than its factorization.

66667312635023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249310841.

The product of its (nonzero) digits is 29393280, while the sum is 56.

The spelling of 66667312635023 in words is "sixty-six trillion, six hundred sixty-seven billion, three hundred twelve million, six hundred thirty-five thousand, twenty-three".