1000866793312 has 72 divisors (see below), whose sum is σ = 2104680780216. Its totient is φ = 468382362624.

The previous prime is 1000866793273. The next prime is 1000866793313. The reversal of 1000866793312 is 2133976680001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000866793313) 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 11 ways as a sum of consecutive naturals, for example, 436888 + ... + 1480744.

It is an arithmetic number, because the mean of its divisors is an integer number (29231677503).

Almost surely, 2^{1000866793312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000866793312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052340390108).

1000866793312 is an abundant number, since it is smaller than the sum of its proper divisors (1103813986904).

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

1000866793312 is a wasteful number, since it uses less digits than its factorization.

1000866793312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043988 (or 1043961 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 1000866793312 in words is "one trillion, eight hundred sixty-six million, seven hundred ninety-three thousand, three hundred twelve".