67391453479 has 16 divisors (see below), whose sum is σ = 77266762560. Its totient is φ = 57578330880.

The previous prime is 67391453461. The next prime is 67391453483. The reversal of 67391453479 is 97435419376.

It is not a de Polignac number, because 67391453479 - 2⁹ = 67391452967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67391459479) 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, 4711819 + ... + 4726099.

It is an arithmetic number, because the mean of its divisors is an integer number (4829172660).

Almost surely, 2^67391453479 is an apocalyptic number.

67391453479 is a deficient number, since it is larger than the sum of its proper divisors (9875309081).

67391453479 is a wasteful number, since it uses less digits than its factorization.

67391453479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16410.

The product of its digits is 17146080, while the sum is 58.

The spelling of 67391453479 in words is "sixty-seven billion, three hundred ninety-one million, four hundred fifty-three thousand, four hundred seventy-nine".