67768138142624 has 48 divisors (see below), whose sum is σ = 138901475103048. Its totient is φ = 32516663058432.

The previous prime is 67768138142609. The next prime is 67768138142659. The reversal of 67768138142624 is 42624183186776.

It can be written as a sum of positive squares in 4 ways, for example, as 63340396334224 + 4427741808400 = 7958668^2 + 2104220^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391945097 + ... + 392117960.

Almost surely, 2^{67768138142624} is an apocalyptic number.

It is an amenable number.

67768138142624 is an abundant number, since it is smaller than the sum of its proper divisors (71133336960424).

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

67768138142624 is a wasteful number, since it uses less digits than its factorization.

67768138142624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784063177 (or 784063169 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 65.

The spelling of 67768138142624 in words is "sixty-seven trillion, seven hundred sixty-eight billion, one hundred thirty-eight million, one hundred forty-two thousand, six hundred twenty-four".