968991921289 has 8 divisors (see below), whose sum is σ = 1108485198080. Its totient is φ = 829765109376.

The previous prime is 968991921251. The next prime is 968991921323. The reversal of 968991921289 is 982129199869.

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

It is not a de Polignac number, because 968991921289 - 2¹¹ = 968991919241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (968991921229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66608424 + ... + 66622969.

It is an arithmetic number, because the mean of its divisors is an integer number (138560649760).

Almost surely, 2^968991921289 is an apocalyptic number.

It is an amenable number.

968991921289 is a deficient number, since it is larger than the sum of its proper divisors (139493276791).

968991921289 is a wasteful number, since it uses less digits than its factorization.

968991921289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133232439.

The product of its digits is 90699264, while the sum is 73.

The spelling of 968991921289 in words is "nine hundred sixty-eight billion, nine hundred ninety-one million, nine hundred twenty-one thousand, two hundred eighty-nine".