68529952871524 has 81 divisors (see below), whose sum is σ = 126640188329473. Its totient is φ = 32447156769664.

The previous prime is 68529952871507. The next prime is 68529952871539. The reversal of 68529952871524 is 42517825992586.

The square root of 68529952871524 is 8278282.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 23291414949924 + 45238537921600 = 4826118^2 + 6725960^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25447437522 + ... + 25447440214.

Almost surely, 2^{68529952871524} is an apocalyptic number.

68529952871524 is the 8278282-nd square number.

It is an amenable number.

68529952871524 is a deficient number, since it is larger than the sum of its proper divisors (58110235457949).

68529952871524 is an frugal number, since it uses more digits than its factorization.

68529952871524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554 (or 2777 counting only the distinct ones).

The product of its digits is 870912000, while the sum is 73.

The spelling of 68529952871524 in words is "sixty-eight trillion, five hundred twenty-nine billion, nine hundred fifty-two million, eight hundred seventy-one thousand, five hundred twenty-four".