163553243621552 has 10 divisors (see below), whose sum is σ = 316884409516788. Its totient is φ = 81776621810768.

The previous prime is 163553243621539. The next prime is 163553243621563. The reversal of 163553243621552 is 255126342355361.

It is a junction number, because it is equal to n+sod(n) for n = 163553243621494 and 163553243621503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111038863158 + ... + 5111038863189.

Almost surely, 2^{163553243621552} is an apocalyptic number.

It is an amenable number.

163553243621552 is a deficient number, since it is larger than the sum of its proper divisors (153331165895236).

163553243621552 is a wasteful number, since it uses less digits than its factorization.

163553243621552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222077726355 (or 10222077726349 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 53.

The spelling of 163553243621552 in words is "one hundred sixty-three trillion, five hundred fifty-three billion, two hundred forty-three million, six hundred twenty-one thousand, five hundred fifty-two".