116561912321 has 8 divisors (see below), whose sum is σ = 119277940320. Its totient is φ = 113846124672.

The previous prime is 116561912317. The next prime is 116561912353. The reversal of 116561912321 is 123219165611.

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 116561912321 - 2² = 116561912317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116561912521) 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, 1249850 + ... + 1339868.

It is an arithmetic number, because the mean of its divisors is an integer number (14909742540).

Almost surely, 2^116561912321 is an apocalyptic number.

It is an amenable number.

116561912321 is a deficient number, since it is larger than the sum of its proper divisors (2716027999).

116561912321 is an equidigital number, since it uses as much as digits as its factorization.

116561912321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120175.

The product of its digits is 19440, while the sum is 38.

The spelling of 116561912321 in words is "one hundred sixteen billion, five hundred sixty-one million, nine hundred twelve thousand, three hundred twenty-one".