163507242242556 has 18 divisors (see below), whose sum is σ = 413309973446552. Its totient is φ = 54502414080840.

The previous prime is 163507242242543. The next prime is 163507242242579. The reversal of 163507242242556 is 655242242705361.

163507242242556 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 0 + 7 + 2 + 42 + 2 + 42 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2270933920000 + ... + 2270933920071.

Almost surely, 2^{163507242242556} is an apocalyptic number.

It is an amenable number.

163507242242556 is an abundant number, since it is smaller than the sum of its proper divisors (249802731203996).

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

163507242242556 is a wasteful number, since it uses less digits than its factorization.

163507242242556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541867840081 (or 4541867840076 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 54.

The spelling of 163507242242556 in words is "one hundred sixty-three trillion, five hundred seven billion, two hundred forty-two million, two hundred forty-two thousand, five hundred fifty-six".