161163332055 has 192 divisors, whose sum is σ = 317743036416. Its totient is φ = 74895360000.

The previous prime is 161163332009. The next prime is 161163332059. The reversal of 161163332055 is 550233361161.

161163332055 is a `hidden beast` number, since 1 + 6 + 11 + 633 + 3 + 2 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 161163332055 - 2¹³ = 161163323863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161163332059) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 251424535 + ... + 251425175.

It is an arithmetic number, because the mean of its divisors is an integer number (1654911648).

Almost surely, 2^161163332055 is an apocalyptic number.

161163332055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161163332055 is a deficient number, since it is larger than the sum of its proper divisors (156579704361).

161163332055 is a wasteful number, since it uses less digits than its factorization.

161163332055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 161163332055 in words is "one hundred sixty-one billion, one hundred sixty-three million, three hundred thirty-two thousand, fifty-five".