121447438560 has 192 divisors, whose sum is σ = 485789875200. Its totient is φ = 27759407616.

The previous prime is 121447438559. The next prime is 121447438583. The reversal of 121447438560 is 65834744121.

121447438560 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 47 + 43 + 8 + 560 = 666.

121447438560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 1977820 + ... + 2038299.

It is an arithmetic number, because the mean of its divisors is an integer number (2530155600).

Almost surely, 2^121447438560 is an apocalyptic number.

121447438560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121447438560 is an abundant number, since it is smaller than the sum of its proper divisors (364342436640).

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

121447438560 is a wasteful number, since it uses less digits than its factorization.

121447438560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016150 (or 4016136 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 121447438560 in words is "one hundred twenty-one billion, four hundred forty-seven million, four hundred thirty-eight thousand, five hundred sixty".