1316616223161 has 4 divisors (see below), whose sum is σ = 1755488297552. Its totient is φ = 877744148772.

The previous prime is 1316616223147. The next prime is 1316616223163. The reversal of 1316616223161 is 1613226166131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1316616223161 - 2¹⁹ = 1316615698873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1316616223163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219436037191 + ... + 219436037196.

It is an arithmetic number, because the mean of its divisors is an integer number (438872074388).

Almost surely, 2^{1316616223161} is an apocalyptic number.

It is an amenable number.

1316616223161 is a deficient number, since it is larger than the sum of its proper divisors (438872074391).

1316616223161 is an equidigital number, since it uses as much as digits as its factorization.

1316616223161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438872074390.

The product of its digits is 46656, while the sum is 39.

The spelling of 1316616223161 in words is "one trillion, three hundred sixteen billion, six hundred sixteen million, two hundred twenty-three thousand, one hundred sixty-one".