321114993661 has 16 divisors (see below), whose sum is σ = 400417049088. Its totient is φ = 250178295600.

The previous prime is 321114993637. The next prime is 321114993701. The reversal of 321114993661 is 166399411123.

It is a cyclic number.

It is not a de Polignac number, because 321114993661 - 2⁹ = 321114993149 is a prime.

It is a super-2 number, since 2×321114993661² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321114993061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131986 + ... + 812188.

It is an arithmetic number, because the mean of its divisors is an integer number (25026065568).

Almost surely, 2^321114993661 is an apocalyptic number.

It is an amenable number.

321114993661 is a deficient number, since it is larger than the sum of its proper divisors (79302055427).

321114993661 is a wasteful number, since it uses less digits than its factorization.

321114993661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686352.

The product of its digits is 209952, while the sum is 46.

The spelling of 321114993661 in words is "three hundred twenty-one billion, one hundred fourteen million, nine hundred ninety-three thousand, six hundred sixty-one".