121794344256 has 224 divisors, whose sum is σ = 364753428480. Its totient is φ = 35585611776.

The previous prime is 121794344207. The next prime is 121794344257. The reversal of 121794344256 is 652443497121.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121794344257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7972081 + ... + 7987343.

It is an arithmetic number, because the mean of its divisors is an integer number (1628363520).

Almost surely, 2^121794344256 is an apocalyptic number.

121794344256 is a gapful number since it is divisible by the number (16) 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 121794344256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182376714240).

121794344256 is an abundant number, since it is smaller than the sum of its proper divisors (242959084224).

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

121794344256 is a wasteful number, since it uses less digits than its factorization.

121794344256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15453 (or 15443 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The spelling of 121794344256 in words is "one hundred twenty-one billion, seven hundred ninety-four million, three hundred forty-four thousand, two hundred fifty-six".