163605261330 has 96 divisors (see below), whose sum is σ = 486251595648. Its totient is φ = 37387008000.

The previous prime is 163605261277. The next prime is 163605261343. The reversal of 163605261330 is 33162506361.

163605261330 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 0 + 5 + 2 + 613 + 30 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2997585 + ... + 3051675.

It is an arithmetic number, because the mean of its divisors is an integer number (5065120788).

Almost surely, 2^163605261330 is an apocalyptic number.

163605261330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163605261330 is an abundant number, since it is smaller than the sum of its proper divisors (322646334318).

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

163605261330 is a wasteful number, since it uses less digits than its factorization.

163605261330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58912 (or 58909 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 163605261330 its reverse (33162506361), we get a palindrome (196767767691).

The spelling of 163605261330 in words is "one hundred sixty-three billion, six hundred five million, two hundred sixty-one thousand, three hundred thirty".