121388676539730 has 128 divisors (see below), whose sum is σ = 313585100269056. Its totient is φ = 29961172684800.

The previous prime is 121388676539729. The next prime is 121388676539743. The reversal of 121388676539730 is 37935676883121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168599184 + ... + 169317636.

It is an arithmetic number, because the mean of its divisors is an integer number (2449883595852).

Almost surely, 2^{121388676539730} is an apocalyptic number.

121388676539730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121388676539730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156792550134528).

121388676539730 is an abundant number, since it is smaller than the sum of its proper divisors (192196423729326).

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

121388676539730 is a wasteful number, since it uses less digits than its factorization.

121388676539730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723972.

The product of its (nonzero) digits is 274337280, while the sum is 69.

The spelling of 121388676539730 in words is "one hundred twenty-one trillion, three hundred eighty-eight billion, six hundred seventy-six million, five hundred thirty-nine thousand, seven hundred thirty".