161130521888 has 48 divisors (see below), whose sum is σ = 362673702720. Its totient is φ = 69031170816.

The previous prime is 161130521863. The next prime is 161130521911. The reversal of 161130521888 is 888125031161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503870 + ... + 759042.

It is an arithmetic number, because the mean of its divisors is an integer number (7555702140).

Almost surely, 2^161130521888 is an apocalyptic number.

It is an amenable number.

161130521888 is an abundant number, since it is smaller than the sum of its proper divisors (201543180832).

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

161130521888 is a wasteful number, since it uses less digits than its factorization.

161130521888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258009 (or 258001 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 161130521888 in words is "one hundred sixty-one billion, one hundred thirty million, five hundred twenty-one thousand, eight hundred eighty-eight".