121853580480 has 672 divisors, whose sum is σ = 453701139840. Its totient is φ = 29942415360.

The previous prime is 121853580467. The next prime is 121853580551. The reversal of 121853580480 is 84085358121.

121853580480 is a `hidden beast` number, since 1 + 2 + 18 + 53 + 580 + 4 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 214153636 + ... + 214154204.

Almost surely, 2^121853580480 is an apocalyptic number.

121853580480 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 121853580480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226850569920).

121853580480 is an abundant number, since it is smaller than the sum of its proper divisors (331847559360).

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

121853580480 is a wasteful number, since it uses less digits than its factorization.

121853580480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The spelling of 121853580480 in words is "one hundred twenty-one billion, eight hundred fifty-three million, five hundred eighty thousand, four hundred eighty".