121405651760 has 80 divisors (see below), whose sum is σ = 286566810336. Its totient is φ = 47824717824.

The previous prime is 121405651721. The next prime is 121405651799. The reversal of 121405651760 is 67156504121.

121405651760 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (121405651721) and next prime (121405651799).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3938327 + ... + 3969033.

Almost surely, 2^121405651760 is an apocalyptic number.

121405651760 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 121405651760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143283405168).

121405651760 is an abundant number, since it is smaller than the sum of its proper divisors (165161158576).

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

121405651760 is a wasteful number, since it uses less digits than its factorization.

121405651760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31470 (or 31464 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 121405651760 in words is "one hundred twenty-one billion, four hundred five million, six hundred fifty-one thousand, seven hundred sixty".