121766570428160 has 144 divisors (see below), whose sum is σ = 350879986329600. Its totient is φ = 39551246880768.

The previous prime is 121766570428159. The next prime is 121766570428183. The reversal of 121766570428160 is 61824075667121.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 121766570428096 and 121766570428105.

It is a congruent number.

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, 357461840 + ... + 357802319.

Almost surely, 2^{121766570428160} is an apocalyptic number.

121766570428160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121766570428160 is an abundant number, since it is smaller than the sum of its proper divisors (229113415901440).

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

121766570428160 is an equidigital number, since it uses as much as digits as its factorization.

121766570428160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715264206 (or 715264192 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 121766570428160 in words is "one hundred twenty-one trillion, seven hundred sixty-six billion, five hundred seventy million, four hundred twenty-eight thousand, one hundred sixty".