121878476160 has 768 divisors, whose sum is σ = 487594598400. Its totient is φ = 25732546560.

The previous prime is 121878476143. The next prime is 121878476171. The reversal of 121878476160 is 61674878121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73287489 + ... + 73289151.

It is an arithmetic number, because the mean of its divisors is an integer number (634888800).

Almost surely, 2^121878476160 is an apocalyptic number.

121878476160 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 121878476160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243797299200).

121878476160 is an abundant number, since it is smaller than the sum of its proper divisors (365716122240).

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

121878476160 is a wasteful number, since it uses less digits than its factorization.

121878476160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The spelling of 121878476160 in words is "one hundred twenty-one billion, eight hundred seventy-eight million, four hundred seventy-six thousand, one hundred sixty".