67146922705 has 4 divisors (see below), whose sum is σ = 80576307252. Its totient is φ = 53717538160.

The previous prime is 67146922681. The next prime is 67146922709. The reversal of 67146922705 is 50722964176.

It is a happy number.

67146922705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47671045569 + 19475877136 = 218337^2 + 139556^2 .

It is not a de Polignac number, because 67146922705 - 2¹¹ = 67146920657 is a prime.

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 a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67146922709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6714692266 + ... + 6714692275.

It is an arithmetic number, because the mean of its divisors is an integer number (20144076813).

Almost surely, 2^67146922705 is an apocalyptic number.

It is an amenable number.

67146922705 is a deficient number, since it is larger than the sum of its proper divisors (13429384547).

67146922705 is a wasteful number, since it uses less digits than its factorization.

67146922705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13429384546.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 67146922705 in words is "sixty-seven billion, one hundred forty-six million, nine hundred twenty-two thousand, seven hundred five".