163103561321556 has 12 divisors (see below), whose sum is σ = 380574976416992. Its totient is φ = 54367853773848.

The previous prime is 163103561321543. The next prime is 163103561321557. The reversal of 163103561321556 is 655123165301361.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×163103561321556² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163103561321557) 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, 6795981721720 + ... + 6795981721743.

Almost surely, 2^{163103561321556} is an apocalyptic number.

It is an amenable number.

163103561321556 is an abundant number, since it is smaller than the sum of its proper divisors (217471415095436).

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

163103561321556 is a wasteful number, since it uses less digits than its factorization.

163103561321556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13591963443470 (or 13591963443468 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 48.

The spelling of 163103561321556 in words is "one hundred sixty-three trillion, one hundred three billion, five hundred sixty-one million, three hundred twenty-one thousand, five hundred fifty-six".