163605623040 has 144 divisors (see below), whose sum is σ = 580572854400. Its totient is φ = 43628156928.

The previous prime is 163605623017. The next prime is 163605623099. The reversal of 163605623040 is 40326506361.

163605623040 is a `hidden beast` number, since 1 + 6 + 3 + 60 + 562 + 30 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 163605622986 and 163605623004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2332420 + ... + 2401539.

Almost surely, 2^163605623040 is an apocalyptic number.

163605623040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163605623040 is an abundant number, since it is smaller than the sum of its proper divisors (416967231360).

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

163605623040 is an equidigital number, since it uses as much as digits as its factorization.

163605623040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733989 (or 4733969 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 163605623040 in words is "one hundred sixty-three billion, six hundred five million, six hundred twenty-three thousand, forty".