163442541423505 has 8 divisors (see below), whose sum is σ = 197226753897600. Its totient is φ = 130023563679216.

The previous prime is 163442541423463. The next prime is 163442541423517. The reversal of 163442541423505 is 505324145244361.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163442541423505 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91308681465 + ... + 91308683254.

It is an arithmetic number, because the mean of its divisors is an integer number (24653344237200).

Almost surely, 2^{163442541423505} is an apocalyptic number.

It is an amenable number.

163442541423505 is a deficient number, since it is larger than the sum of its proper divisors (33784212474095).

163442541423505 is a wasteful number, since it uses less digits than its factorization.

163442541423505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182617364903.

The product of its (nonzero) digits is 6912000, while the sum is 49.

Adding to 163442541423505 its reverse (505324145244361), we get a palindrome (668766686667866).

The spelling of 163442541423505 in words is "one hundred sixty-three trillion, four hundred forty-two billion, five hundred forty-one million, four hundred twenty-three thousand, five hundred five".