163557082555 has 16 divisors (see below), whose sum is σ = 200064263904. Its totient is φ = 128339372800.

The previous prime is 163557082541. The next prime is 163557082561. The reversal of 163557082555 is 555280755361.

It is not a de Polignac number, because 163557082555 - 2¹¹ = 163557080507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459402 + ... + 1567471.

It is an arithmetic number, because the mean of its divisors is an integer number (12504016494).

Almost surely, 2^163557082555 is an apocalyptic number.

163557082555 is a deficient number, since it is larger than the sum of its proper divisors (36507181349).

163557082555 is a wasteful number, since it uses less digits than its factorization.

163557082555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027086.

The product of its (nonzero) digits is 6300000, while the sum is 52.

The spelling of 163557082555 in words is "one hundred sixty-three billion, five hundred fifty-seven million, eighty-two thousand, five hundred fifty-five".