67166081793 has 32 divisors (see below), whose sum is σ = 100800806400. Its totient is φ = 44194819968.

The previous prime is 67166081777. The next prime is 67166081819. The reversal of 67166081793 is 39718066176.

It is a happy number.

67166081793 is a `hidden beast` number, since 6 + 7 + 16 + 608 + 17 + 9 + 3 = 666.

It is not a de Polignac number, because 67166081793 - 2⁴ = 67166081777 is a prime.

It is a super-2 number, since 2×67166081793² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67166081393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11551555 + ... + 11557367.

It is an arithmetic number, because the mean of its divisors is an integer number (3150025200).

Almost surely, 2^67166081793 is an apocalyptic number.

It is an amenable number.

67166081793 is a deficient number, since it is larger than the sum of its proper divisors (33634724607).

67166081793 is a wasteful number, since it uses less digits than its factorization.

67166081793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11318 (or 11312 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 67166081793 in words is "sixty-seven billion, one hundred sixty-six million, eighty-one thousand, seven hundred ninety-three".