163205554504 has 32 divisors (see below), whose sum is σ = 306774329400. Its totient is φ = 81399185920.

The previous prime is 163205554483. The next prime is 163205554553. The reversal of 163205554504 is 405455502361.

It can be written as a sum of positive squares in 4 ways, for example, as 75531528900 + 87674025604 = 274830^2 + 296098^2 .

It is a super-2 number, since 2×163205554504² (a number of 23 digits) contains 22 as substring.

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, 16255374 + ... + 16265410.

Almost surely, 2^163205554504 is an apocalyptic number.

It is an amenable number.

163205554504 is a deficient number, since it is larger than the sum of its proper divisors (143568774896).

163205554504 is a wasteful number, since it uses less digits than its factorization.

163205554504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14913 (or 14909 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 163205554504 in words is "one hundred sixty-three billion, two hundred five million, five hundred fifty-four thousand, five hundred four".