67920136002 has 24 divisors (see below), whose sum is σ = 147530991036. Its totient is φ = 22583015136.

The previous prime is 67920136001. The next prime is 67920136043. The reversal of 67920136002 is 20063102976.

It can be written as a sum of positive squares in 2 ways, for example, as 67865981121 + 54154881 = 260511^2 + 7359^2 .

It is a super-2 number, since 2×67920136002² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67920136001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4745173 + ... + 4759464.

Almost surely, 2^67920136002 is an apocalyptic number.

67920136002 is an abundant number, since it is smaller than the sum of its proper divisors (79610855034).

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

67920136002 is a wasteful number, since it uses less digits than its factorization.

67920136002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505042 (or 9505039 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

Adding to 67920136002 its reverse (20063102976), we get a palindrome (87983238978).

The spelling of 67920136002 in words is "sixty-seven billion, nine hundred twenty million, one hundred thirty-six thousand, two".