16120617161 has 6 divisors (see below), whose sum is σ = 17719356186. Its totient is φ = 14655106400.

The previous prime is 16120617151. The next prime is 16120617173. The reversal of 16120617161 is 16171602161.

It can be written as a sum of positive squares in only one way, i.e., 13905126400 + 2215490761 = 117920^2 + 47069^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16120617161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16120617151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66614000 + ... + 66614241.

It is an arithmetic number, because the mean of its divisors is an integer number (2953226031).

Almost surely, 2^16120617161 is an apocalyptic number.

16120617161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16120617161 is a deficient number, since it is larger than the sum of its proper divisors (1598739025).

16120617161 is a wasteful number, since it uses less digits than its factorization.

16120617161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133228263 (or 133228252 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 16120617161 in words is "sixteen billion, one hundred twenty million, six hundred seventeen thousand, one hundred sixty-one".