67164067345 has 4 divisors (see below), whose sum is σ = 80596880820. Its totient is φ = 53731253872.

The previous prime is 67164067339. The next prime is 67164067363. The reversal of 67164067345 is 54376046176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25047177169 + 42116890176 = 158263^2 + 205224^2 .

It is a cyclic number.

It is not a de Polignac number, because 67164067345 - 2³ = 67164067337 is a prime.

It is a super-2 number, since 2×67164067345² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 6716406730 + ... + 6716406739.

It is an arithmetic number, because the mean of its divisors is an integer number (20149220205).

Almost surely, 2^67164067345 is an apocalyptic number.

It is an amenable number.

67164067345 is a deficient number, since it is larger than the sum of its proper divisors (13432813475).

67164067345 is a wasteful number, since it uses less digits than its factorization.

67164067345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13432813474.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 67164067345 in words is "sixty-seven billion, one hundred sixty-four million, sixty-seven thousand, three hundred forty-five".