121682338521580 has 96 divisors (see below), whose sum is σ = 271626032821248. Its totient is φ = 45690119904000.

The previous prime is 121682338521553. The next prime is 121682338521587. The reversal of 121682338521580 is 85125833286121.

It is not an unprimeable number, because it can be changed into a prime (121682338521587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7536105 + ... + 17325055.

It is an arithmetic number, because the mean of its divisors is an integer number (2829437841888).

Almost surely, 2^{121682338521580} is an apocalyptic number.

121682338521580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121682338521580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135813016410624).

121682338521580 is an abundant number, since it is smaller than the sum of its proper divisors (149943694299668).

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

121682338521580 is a wasteful number, since it uses less digits than its factorization.

121682338521580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9789487 (or 9789485 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 121682338521580 in words is "one hundred twenty-one trillion, six hundred eighty-two billion, three hundred thirty-eight million, five hundred twenty-one thousand, five hundred eighty".