67145370461 has 16 divisors (see below), whose sum is σ = 73265157504. Its totient is φ = 61163684544.

The previous prime is 67145370443. The next prime is 67145370463. The reversal of 67145370461 is 16407354176.

It is a cyclic number.

It is not a de Polignac number, because 67145370461 - 2²⁶ = 67078261597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67145370463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921995 + ... + 992151.

It is an arithmetic number, because the mean of its divisors is an integer number (4579072344).

Almost surely, 2^67145370461 is an apocalyptic number.

It is an amenable number.

67145370461 is a deficient number, since it is larger than the sum of its proper divisors (6119787043).

67145370461 is a wasteful number, since it uses less digits than its factorization.

67145370461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71140.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 67145370461 in words is "sixty-seven billion, one hundred forty-five million, three hundred seventy thousand, four hundred sixty-one".