163313305155 has 384 divisors, whose sum is σ = 404819251200. Its totient is φ = 59907133440.

The previous prime is 163313305121. The next prime is 163313305213. The reversal of 163313305155 is 551503313361.

163313305155 is a `hidden beast` number, since 1 + 6 + 3 + 3 + 133 + 0 + 515 + 5 = 666.

It is not a de Polignac number, because 163313305155 - 2¹² = 163313301059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 50764107 + ... + 50767323.

It is an arithmetic number, because the mean of its divisors is an integer number (1054216800).

Almost surely, 2^163313305155 is an apocalyptic number.

163313305155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163313305155 is an abundant number, since it is smaller than the sum of its proper divisors (241505946045).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163313305155 is a wasteful number, since it uses less digits than its factorization.

163313305155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296 (or 3279 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 36.

The spelling of 163313305155 in words is "one hundred sixty-three billion, three hundred thirteen million, three hundred five thousand, one hundred fifty-five".