163540044212242 has 8 divisors (see below), whose sum is σ = 245388666156732. Its totient is φ = 81743822160000.

The previous prime is 163540044212231. The next prime is 163540044212249. The reversal of 163540044212242 is 242212440045361.

It can be written as a sum of positive squares in 2 ways, for example, as 109563971532961 + 53976072679281 = 10467281^2 + 7346841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 163540044212195 and 163540044212204.

It is not an unprimeable number, because it can be changed into a prime (163540044212249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13099965259 + ... + 13099977742.

Almost surely, 2^{163540044212242} is an apocalyptic number.

163540044212242 is a deficient number, since it is larger than the sum of its proper divisors (81848621944490).

163540044212242 is a wasteful number, since it uses less digits than its factorization.

163540044212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26199946124.

The product of its (nonzero) digits is 368640, while the sum is 40.

The spelling of 163540044212242 in words is "one hundred sixty-three trillion, five hundred forty billion, forty-four million, two hundred twelve thousand, two hundred forty-two".