163381331610 has 96 divisors (see below), whose sum is σ = 506815600320. Its totient is φ = 37344301344.

The previous prime is 163381331599. The next prime is 163381331627. The reversal of 163381331610 is 16133183361.

It is a happy number.

163381331610 is a `hidden beast` number, since 1 + 6 + 3 + 3 + 8 + 1 + 3 + 31 + 610 = 666.

It is a Curzon number.

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, 6161424 + ... + 6187883.

It is an arithmetic number, because the mean of its divisors is an integer number (5279329170).

Almost surely, 2^163381331610 is an apocalyptic number.

163381331610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163381331610 is an abundant number, since it is smaller than the sum of its proper divisors (343434268710).

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

163381331610 is a wasteful number, since it uses less digits than its factorization.

163381331610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12349337 (or 12349324 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 163381331610 in words is "one hundred sixty-three billion, three hundred eighty-one million, three hundred thirty-one thousand, six hundred ten".