161115016055 has 32 divisors (see below), whose sum is σ = 227306428416. Its totient is φ = 107338846464.

The previous prime is 161115016033. The next prime is 161115016081. The reversal of 161115016055 is 550610511161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161115016055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132089 + ... + 582818.

It is an arithmetic number, because the mean of its divisors is an integer number (7103325888).

Almost surely, 2^161115016055 is an apocalyptic number.

161115016055 is a deficient number, since it is larger than the sum of its proper divisors (66191412361).

161115016055 is a wasteful number, since it uses less digits than its factorization.

161115016055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715103.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 161115016055 in words is "one hundred sixty-one billion, one hundred fifteen million, sixteen thousand, fifty-five".