8685256949776 has 75 divisors (see below), whose sum is σ = 18513379401805. Its totient is φ = 3947195711360.

The previous prime is 8685256949737. The next prime is 8685256949821. The reversal of 8685256949776 is 6779496525868.

It is a happy number.

The square root of 8685256949776 is 2947076.

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

It can be written as a sum of positive squares in only one way, i.e., 1955175772176 + 6730081177600 = 1398276^2 + 2594240^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8685256949776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1426381740 + ... + 1426387828.

Almost surely, 2^{8685256949776} is an apocalyptic number.

8685256949776 is the 2947076-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8685256949776

8685256949776 is an abundant number, since it is smaller than the sum of its proper divisors (9828122452029).

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

8685256949776 is an frugal number, since it uses more digits than its factorization.

8685256949776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12230 (or 6102 counting only the distinct ones).

The product of its digits is 10973491200, while the sum is 82.

The spelling of 8685256949776 in words is "eight trillion, six hundred eighty-five billion, two hundred fifty-six million, nine hundred forty-nine thousand, seven hundred seventy-six".