4121721732480 has 256 divisors, whose sum is σ = 14361576825600. Its totient is φ = 997167718400.

The previous prime is 4121721732463. The next prime is 4121721732511. The reversal of 4121721732480 is 842371271214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10171186 + ... + 10568654.

It is an arithmetic number, because the mean of its divisors is an integer number (56099909475).

Almost surely, 2^{4121721732480} is an apocalyptic number.

4121721732480 is a gapful number since it is divisible by the number (40) 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 4121721732480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7180788412800).

4121721732480 is an abundant number, since it is smaller than the sum of its proper divisors (10239855093120).

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

4121721732480 is a wasteful number, since it uses less digits than its factorization.

4121721732480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397993 (or 397981 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 4121721732480 in words is "four trillion, one hundred twenty-one billion, seven hundred twenty-one million, seven hundred thirty-two thousand, four hundred eighty".