163566785003040 has 72 divisors (see below), whose sum is σ = 558171653827788. Its totient is φ = 43617809333760.

The previous prime is 163566785003033. The next prime is 163566785003071. The reversal of 163566785003040 is 40300587665361.

163566785003040 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 6 + 67 + 8 + 500 + 30 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 141353171753616 + 22213613249424 = 11889204^2 + 4713132^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×163566785003040² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56794021131 + ... + 56794024010.

Almost surely, 2^{163566785003040} is an apocalyptic number.

163566785003040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163566785003040 is an abundant number, since it is smaller than the sum of its proper divisors (394604868824748).

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

163566785003040 is a wasteful number, since it uses less digits than its factorization.

163566785003040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113588045162 (or 113588045151 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 163566785003040 in words is "one hundred sixty-three trillion, five hundred sixty-six billion, seven hundred eighty-five million, three thousand, forty".