1000855520648 has 16 divisors (see below), whose sum is σ = 1884658199580. Its totient is φ = 498280000768.

The previous prime is 1000855520641. The next prime is 1000855520681. The reversal of 1000855520648 is 8460255580001.

It can be written as a sum of positive squares in 2 ways, for example, as 995648743684 + 5206776964 = 997822^2 + 72158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000855520599 and 1000855520608.

It is not an unprimeable number, because it can be changed into a prime (1000855520641) 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 3 ways as a sum of consecutive naturals, for example, 268467965 + ... + 268471692.

Almost surely, 2^{1000855520648} is an apocalyptic number.

It is an amenable number.

1000855520648 is a deficient number, since it is larger than the sum of its proper divisors (883802678932).

1000855520648 is a wasteful number, since it uses less digits than its factorization.

1000855520648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536939896 (or 536939892 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 1000855520648 in words is "one trillion, eight hundred fifty-five million, five hundred twenty thousand, six hundred forty-eight".