161616115606001 has 16 divisors (see below), whose sum is σ = 184746809733120. Its totient is φ = 138496092701760.

The previous prime is 161616115605961. The next prime is 161616115606007. The reversal of 161616115606001 is 100606511616161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161616115606001 is a prime.

It is a super-3 number, since 3×161616115606001³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161616115606001.

It is not an unprimeable number, because it can be changed into a prime (161616115606007) 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, 1596993935 + ... + 1597095131.

It is an arithmetic number, because the mean of its divisors is an integer number (11546675608320).

Almost surely, 2^{161616115606001} is an apocalyptic number.

It is an amenable number.

161616115606001 is a deficient number, since it is larger than the sum of its proper divisors (23130694127119).

161616115606001 is a wasteful number, since it uses less digits than its factorization.

161616115606001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151664.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 161616115606001 in words is "one hundred sixty-one trillion, six hundred sixteen billion, one hundred fifteen million, six hundred six thousand, one".