67345661607 has 16 divisors (see below), whose sum is σ = 105932347392. Its totient is φ = 37241840160.

The previous prime is 67345661573. The next prime is 67345661623. The reversal of 67345661607 is 70616654376.

It is a happy number.

It is not a de Polignac number, because 67345661607 - 2¹¹ = 67345659559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67345661607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67345661807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51724128 + ... + 51725429.

It is an arithmetic number, because the mean of its divisors is an integer number (6620771712).

Almost surely, 2^67345661607 is an apocalyptic number.

67345661607 is a deficient number, since it is larger than the sum of its proper divisors (38586685785).

67345661607 is a wasteful number, since it uses less digits than its factorization.

67345661607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103449598.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 67345661607 in words is "sixty-seven billion, three hundred forty-five million, six hundred sixty-one thousand, six hundred seven".