68368515472 has 10 divisors (see below), whose sum is σ = 132463998758. Its totient is φ = 34184257728.

The previous prime is 68368515469. The next prime is 68368515503. The reversal of 68368515472 is 27451586386.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57799853056 + 10568662416 = 240416^2 + 102804^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2136516093 + ... + 2136516124.

Almost surely, 2^68368515472 is an apocalyptic number.

It is an amenable number.

68368515472 is a deficient number, since it is larger than the sum of its proper divisors (64095483286).

68368515472 is a wasteful number, since it uses less digits than its factorization.

68368515472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273032225 (or 4273032219 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 55.

The spelling of 68368515472 in words is "sixty-eight billion, three hundred sixty-eight million, five hundred fifteen thousand, four hundred seventy-two".