163665862308 has 96 divisors (see below), whose sum is σ = 469309205120. Its totient is φ = 48997664640.

The previous prime is 163665862277. The next prime is 163665862309. The reversal of 163665862308 is 803268566361.

It is a happy number.

163665862308 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 6 + 5 + 8 + 623 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (163665862309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1523338 + ... + 1627233.

Almost surely, 2^163665862308 is an apocalyptic number.

163665862308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

163665862308 is an abundant number, since it is smaller than the sum of its proper divisors (305643342812).

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

163665862308 is a wasteful number, since it uses less digits than its factorization.

163665862308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150634 (or 3150626 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 163665862308 in words is "one hundred sixty-three billion, six hundred sixty-five million, eight hundred sixty-two thousand, three hundred eight".