121568163180 has 48 divisors (see below), whose sum is σ = 343761080544. Its totient is φ = 32097203200.

The previous prime is 121568163149. The next prime is 121568163193. The reversal of 121568163180 is 81361865121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10024317 + ... + 10036436.

It is an arithmetic number, because the mean of its divisors is an integer number (7161689178).

Almost surely, 2^121568163180 is an apocalyptic number.

121568163180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121568163180 is an abundant number, since it is smaller than the sum of its proper divisors (222192917364).

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

121568163180 is a wasteful number, since it uses less digits than its factorization.

121568163180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060866 (or 20060864 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 121568163180 in words is "one hundred twenty-one billion, five hundred sixty-eight million, one hundred sixty-three thousand, one hundred eighty".