10868981921 has 8 divisors (see below), whose sum is σ = 12422352000. Its totient is φ = 9315776448.

The previous prime is 10868981897. The next prime is 10868981923. The reversal of 10868981921 is 12918986801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10868981921 - 2⁶ = 10868981857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10868981923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178580 + ... + 231578.

It is an arithmetic number, because the mean of its divisors is an integer number (1552794000).

Almost surely, 2^10868981921 is an apocalyptic number.

It is an amenable number.

10868981921 is a deficient number, since it is larger than the sum of its proper divisors (1553370079).

10868981921 is an equidigital number, since it uses as much as digits as its factorization.

10868981921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82303.

The product of its (nonzero) digits is 497664, while the sum is 53.

The spelling of 10868981921 in words is "ten billion, eight hundred sixty-eight million, nine hundred eighty-one thousand, nine hundred twenty-one".