67166315664 has 120 divisors (see below), whose sum is σ = 208352878848. Its totient is φ = 18571311360.

The previous prime is 67166315603. The next prime is 67166315683. The reversal of 67166315664 is 46651366176.

It is a super-2 number, since 2×67166315664² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387687 + ... + 533510.

Almost surely, 2^67166315664 is an apocalyptic number.

It is an amenable number.

67166315664 is an abundant number, since it is smaller than the sum of its proper divisors (141186563184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67166315664 is a wasteful number, since it uses less digits than its factorization.

67166315664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921253 (or 921240 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 51.

The spelling of 67166315664 in words is "sixty-seven billion, one hundred sixty-six million, three hundred fifteen thousand, six hundred sixty-four".