67145056423 has 8 divisors (see below), whose sum is σ = 68796549360. Its totient is φ = 65494221120.

The previous prime is 67145056409. The next prime is 67145056477. The reversal of 67145056423 is 32465054176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67145056423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67145056423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67145056523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45561 + ... + 369277.

It is an arithmetic number, because the mean of its divisors is an integer number (8599568670).

Almost surely, 2^67145056423 is an apocalyptic number.

67145056423 is a deficient number, since it is larger than the sum of its proper divisors (1651492937).

67145056423 is a wasteful number, since it uses less digits than its factorization.

67145056423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328817.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 67145056423 in words is "sixty-seven billion, one hundred forty-five million, fifty-six thousand, four hundred twenty-three".