985161468880 has 40 divisors (see below), whose sum is σ = 2425235737032. Its totient is φ = 370884317184.

The previous prime is 985161468877. The next prime is 985161468887. The reversal of 985161468880 is 88864161589.

It can be written as a sum of positive squares in 4 ways, for example, as 30601204624 + 954560264256 = 174932^2 + 977016^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985161468887) 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 7 ways as a sum of consecutive naturals, for example, 362190357 + ... + 362193076.

Almost surely, 2^985161468880 is an apocalyptic number.

It is an amenable number.

985161468880 is an abundant number, since it is smaller than the sum of its proper divisors (1440074268152).

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

985161468880 is a wasteful number, since it uses less digits than its factorization.

985161468880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724383463 (or 724383457 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 64.

The spelling of 985161468880 in words is "nine hundred eighty-five billion, one hundred sixty-one million, four hundred sixty-eight thousand, eight hundred eighty".