161000516061 has 24 divisors (see below), whose sum is σ = 289940324544. Its totient is φ = 83636631360.

The previous prime is 161000516041. The next prime is 161000516099. The reversal of 161000516061 is 160615000161.

161000516061 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 0 + 0 + 51 + 606 + 1 = 666.

It is not a de Polignac number, because 161000516061 - 2⁵ = 161000516029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161000516041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116161296 + ... + 116162681.

It is an arithmetic number, because the mean of its divisors is an integer number (12080846856).

Almost surely, 2^161000516061 is an apocalyptic number.

161000516061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161000516061 is a deficient number, since it is larger than the sum of its proper divisors (128939808483).

161000516061 is a wasteful number, since it uses less digits than its factorization.

161000516061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232324001 (or 232323998 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 161000516061 in words is "one hundred sixty-one billion, five hundred sixteen thousand, sixty-one".