67812968391 has 8 divisors (see below), whose sum is σ = 103334047104. Its totient is φ = 38750267640.

The previous prime is 67812968369. The next prime is 67812968417. The reversal of 67812968391 is 19386921876.

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

It is not a de Polignac number, because 67812968391 - 2¹⁰ = 67812967367 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67812968341) 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, 1614594465 + ... + 1614594506.

It is an arithmetic number, because the mean of its divisors is an integer number (12916755888).

Almost surely, 2^67812968391 is an apocalyptic number.

67812968391 is a deficient number, since it is larger than the sum of its proper divisors (35521078713).

67812968391 is a wasteful number, since it uses less digits than its factorization.

67812968391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229188981.

The product of its digits is 7838208, while the sum is 60.

The spelling of 67812968391 in words is "sixty-seven billion, eight hundred twelve million, nine hundred sixty-eight thousand, three hundred ninety-one".