163549003221 has 48 divisors (see below), whose sum is σ = 247337805312. Its totient is φ = 103942080000.

The previous prime is 163549003169. The next prime is 163549003271. The reversal of 163549003221 is 122300945361.

163549003221 is a `hidden beast` number, since 1 + 63 + 549 + 0 + 0 + 32 + 21 = 666.

It is not a de Polignac number, because 163549003221 - 2⁹ = 163549002709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163549003271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120167581 + ... + 120168941.

It is an arithmetic number, because the mean of its divisors is an integer number (5152870944).

Almost surely, 2^163549003221 is an apocalyptic number.

It is an amenable number.

163549003221 is a deficient number, since it is larger than the sum of its proper divisors (83788802091).

163549003221 is a wasteful number, since it uses less digits than its factorization.

163549003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 163549003221 its reverse (122300945361), we get a palindrome (285849948582).

The spelling of 163549003221 in words is "one hundred sixty-three billion, five hundred forty-nine million, three thousand, two hundred twenty-one".