87563981163 has 16 divisors (see below), whose sum is σ = 119657442816. Its totient is φ = 56932032480.

The previous prime is 87563981129. The next prime is 87563981189. The reversal of 87563981163 is 36118936578.

It is not a de Polignac number, because 87563981163 - 2¹⁴ = 87563964779 is a prime.

It is a super-2 number, since 2×87563981163² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87563981563) by changing a digit.

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, 1057308 + ... + 1137113.

It is an arithmetic number, because the mean of its divisors is an integer number (7478590176).

Almost surely, 2^87563981163 is an apocalyptic number.

87563981163 is a deficient number, since it is larger than the sum of its proper divisors (32093461653).

87563981163 is a wasteful number, since it uses less digits than its factorization.

87563981163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194754.

The product of its digits is 6531840, while the sum is 57.

The spelling of 87563981163 in words is "eighty-seven billion, five hundred sixty-three million, nine hundred eighty-one thousand, one hundred sixty-three".