161606110000001 has 8 divisors (see below), whose sum is σ = 165398849932800. Its totient is φ = 157814936353872.

The previous prime is 161606109999989. The next prime is 161606110000037. The reversal of 161606110000001 is 100000011606161.

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 161606110000001 - 2³⁰ = 161605036258177 is a prime.

It is a super-2 number, since 2×161606110000001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161606110000061) 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, 391362890 + ... + 391775603.

It is an arithmetic number, because the mean of its divisors is an integer number (20674856241600).

Almost surely, 2^{161606110000001} is an apocalyptic number.

It is an amenable number.

161606110000001 is a deficient number, since it is larger than the sum of its proper divisors (3792739932799).

161606110000001 is an equidigital number, since it uses as much as digits as its factorization.

161606110000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783143335.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 161606110000001 its reverse (100000011606161), we get a palindrome (261606121606162).

The spelling of 161606110000001 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred ten million, one", and thus it is an aban number.