67391453493 has 120 divisors (see below), whose sum is σ = 125311665600. Its totient is φ = 35339556096.

The previous prime is 67391453491. The next prime is 67391453497. The reversal of 67391453493 is 39435419376.

67391453493 is a `hidden beast` number, since 6 + 7 + 3 + 9 + 14 + 534 + 93 = 666.

It is not a de Polignac number, because 67391453493 - 2¹ = 67391453491 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67391453491) 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 119 ways as a sum of consecutive naturals, for example, 17150353 + ... + 17154281.

It is an arithmetic number, because the mean of its divisors is an integer number (1044263880).

Almost surely, 2^67391453493 is an apocalyptic number.

67391453493 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

67391453493 is a deficient number, since it is larger than the sum of its proper divisors (57920212107).

67391453493 is a wasteful number, since it uses less digits than its factorization.

67391453493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153 (or 4131 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The spelling of 67391453493 in words is "sixty-seven billion, three hundred ninety-one million, four hundred fifty-three thousand, four hundred ninety-three".