67812968392 has 24 divisors (see below), whose sum is σ = 137682397890. Its totient is φ = 31298292480.

The previous prime is 67812968369. The next prime is 67812968417. The reversal of 67812968392 is 29386921876.

It can be written as a sum of positive squares in 3 ways, for example, as 42752178756 + 25060789636 = 206766^2 + 158306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67812968392.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 25077409 + ... + 25080112.

Almost surely, 2^67812968392 is an apocalyptic number.

It is an amenable number.

67812968392 is an abundant number, since it is smaller than the sum of its proper divisors (69869429498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67812968392 is a wasteful number, since it uses less digits than its factorization.

67812968392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50157553 (or 50157536 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The spelling of 67812968392 in words is "sixty-seven billion, eight hundred twelve million, nine hundred sixty-eight thousand, three hundred ninety-two".