1616115516161 has 8 divisors (see below), whose sum is σ = 1686429944640. Its totient is φ = 1545805132432.

The previous prime is 1616115516139. The next prime is 1616115516173. The reversal of 1616115516161 is 1616155116161.

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 1616115516161 - 2⁶ = 1616115516097 is a prime.

It is a super-2 number, since 2×1616115516161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616115516101) 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, 180146 + ... + 1806843.

It is an arithmetic number, because the mean of its divisors is an integer number (210803743080).

Almost surely, 2^{1616115516161} is an apocalyptic number.

It is an amenable number.

1616115516161 is a deficient number, since it is larger than the sum of its proper divisors (70314428479).

1616115516161 is a wasteful number, since it uses less digits than its factorization.

1616115516161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022375.

The product of its digits is 32400, while the sum is 41.

The spelling of 1616115516161 in words is "one trillion, six hundred sixteen billion, one hundred fifteen million, five hundred sixteen thousand, one hundred sixty-one".