1020810026868 has 24 divisors (see below), whose sum is σ = 2382223347840. Its totient is φ = 340222396800.

The previous prime is 1020810026851. The next prime is 1020810026891. The reversal of 1020810026868 is 8686200180201.

It is a super-2 number, since 2×1020810026868² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5862133 + ... + 6033756.

It is an arithmetic number, because the mean of its divisors is an integer number (99259306160).

Almost surely, 2^{1020810026868} is an apocalyptic number.

It is an amenable number.

1020810026868 is an abundant number, since it is smaller than the sum of its proper divisors (1361413320972).

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

1020810026868 is a wasteful number, since it uses less digits than its factorization.

1020810026868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11903047 (or 11903045 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 1020810026868 in words is "one trillion, twenty billion, eight hundred ten million, twenty-six thousand, eight hundred sixty-eight".