868968289920 has 128 divisors (see below), whose sum is σ = 2932768088640. Its totient is φ = 218093993984.

The previous prime is 868968289697. The next prime is 868968289933. The reversal of 868968289920 is 29982869868.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13278762 + ... + 13344041.

Almost surely, 2^868968289920 is an apocalyptic number.

868968289920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

868968289920 is an abundant number, since it is smaller than the sum of its proper divisors (2063799798720).

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

868968289920 is a wasteful number, since it uses less digits than its factorization.

868968289920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26622842 (or 26622830 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 75.

The spelling of 868968289920 in words is "eight hundred sixty-eight billion, nine hundred sixty-eight million, two hundred eighty-nine thousand, nine hundred twenty".