121943480601600 has 792 divisors, whose sum is σ = 525251681859840. Its totient is φ = 26405799690240.

The previous prime is 121943480601571. The next prime is 121943480601623. The reversal of 121943480601600 is 6106084349121.

121943480601600 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 4 + 3 + 480 + 6 + 0 + 160 + 0 = 666.

It is a super-2 number, since 2×121943480601600² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 28653469 + ... + 32632931.

Almost surely, 2^{121943480601600} is an apocalyptic number.

121943480601600 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 121943480601600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262625840929920).

121943480601600 is an abundant number, since it is smaller than the sum of its proper divisors (403308201258240).

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

121943480601600 is a wasteful number, since it uses less digits than its factorization.

121943480601600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979525 (or 3979499 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 121943480601600 in words is "one hundred twenty-one trillion, nine hundred forty-three billion, four hundred eighty million, six hundred one thousand, six hundred".