121378557364 has 12 divisors (see below), whose sum is σ = 217352300704. Its totient is φ = 59277900024.

The previous prime is 121378557361. The next prime is 121378557371. The reversal of 121378557364 is 463755873121.

121378557364 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121378557361) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 352844472 + ... + 352844815.

Almost surely, 2^121378557364 is an apocalyptic number.

It is an amenable number.

121378557364 is a deficient number, since it is larger than the sum of its proper divisors (95973743340).

121378557364 is a wasteful number, since it uses less digits than its factorization.

121378557364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705689334 (or 705689332 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 52.

The spelling of 121378557364 in words is "one hundred twenty-one billion, three hundred seventy-eight million, five hundred fifty-seven thousand, three hundred sixty-four".