121613753600 has 108 divisors (see below), whose sum is σ = 301151350080. Its totient is φ = 48623155200.

The previous prime is 121613753543. The next prime is 121613753603. The reversal of 121613753600 is 6357316121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121613753603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26487305 + ... + 26491895.

Almost surely, 2^121613753600 is an apocalyptic number.

121613753600 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 121613753600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150575675040).

121613753600 is an abundant number, since it is smaller than the sum of its proper divisors (179537596480).

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

121613753600 is an equidigital number, since it uses as much as digits as its factorization.

121613753600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8756 (or 8737 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 121613753600 in words is "one hundred twenty-one billion, six hundred thirteen million, seven hundred fifty-three thousand, six hundred".