163442221066525 has 12 divisors (see below), whose sum is σ = 202669015580992. Its totient is φ = 130753350105840.

The previous prime is 163442221066519. The next prime is 163442221066541. The reversal of 163442221066525 is 525660122244361.

It is a de Polignac number, because none of the positive numbers 2^k-163442221066525 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

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, 2740047 + ... + 18286396.

Almost surely, 2^{163442221066525} is an apocalyptic number.

It is an amenable number.

163442221066525 is a deficient number, since it is larger than the sum of its proper divisors (39226794514467).

163442221066525 is a wasteful number, since it uses less digits than its factorization.

163442221066525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337380 (or 21337375 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 163442221066525 in words is "one hundred sixty-three trillion, four hundred forty-two billion, two hundred twenty-one million, sixty-six thousand, five hundred twenty-five".