121286937575680 has 144 divisors (see below), whose sum is σ = 300797784258048. Its totient is φ = 46807934976000.

The previous prime is 121286937575611. The next prime is 121286937575693. The reversal of 121286937575680 is 86575739682121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8516820 + ... + 17751340.

It is an arithmetic number, because the mean of its divisors is an integer number (2088873501792).

Almost surely, 2^{121286937575680} is an apocalyptic number.

121286937575680 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 121286937575680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150398892129024).

121286937575680 is an abundant number, since it is smaller than the sum of its proper divisors (179510846682368).

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

121286937575680 is an equidigital number, since it uses as much as digits as its factorization.

121286937575680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9234904 (or 9234890 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 70.

The spelling of 121286937575680 in words is "one hundred twenty-one trillion, two hundred eighty-six billion, nine hundred thirty-seven million, five hundred seventy-five thousand, six hundred eighty".