121647155364000 has 288 divisors, whose sum is σ = 493400863178496. Its totient is φ = 27805064025600.

The previous prime is 121647155363989. The next prime is 121647155364001. The reversal of 121647155364000 is 463551746121.

It is a happy number.

121647155364000 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 4 + 71 + 5 + 536 + 40 + 0 + 0 = 666.

121647155364000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is not an unprimeable number, because it can be changed into a prime (121647155364001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241111404 + ... + 241615403.

It is an arithmetic number, because the mean of its divisors is an integer number (1713197441592).

Almost surely, 2^{121647155364000} is an apocalyptic number.

121647155364000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121647155364000 is an abundant number, since it is smaller than the sum of its proper divisors (371753707814496).

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

121647155364000 is a wasteful number, since it uses less digits than its factorization.

121647155364000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482726845 (or 482726824 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 121647155364000 in words is "one hundred twenty-one trillion, six hundred forty-seven billion, one hundred fifty-five million, three hundred sixty-four thousand".