1721413539648 has 336 divisors, whose sum is σ = 5676680056320. Its totient is φ = 512796096000.

The previous prime is 1721413539619. The next prime is 1721413539661. The reversal of 1721413539648 is 8469353141271.

1721413539648 is a `hidden beast` number, since 1 + 7 + 2 + 1 + 41 + 3 + 539 + 64 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1721413539594 and 1721413539603.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 10007973 + ... + 10178523.

It is an arithmetic number, because the mean of its divisors is an integer number (16894881120).

Almost surely, 2^{1721413539648} is an apocalyptic number.

1721413539648 is a gapful number since it is divisible by the number (18) 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 1721413539648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2838340028160).

1721413539648 is an abundant number, since it is smaller than the sum of its proper divisors (3955266516672).

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

1721413539648 is a wasteful number, since it uses less digits than its factorization.

1721413539648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170648 (or 170626 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 1721413539648 in words is "one trillion, seven hundred twenty-one billion, four hundred thirteen million, five hundred thirty-nine thousand, six hundred forty-eight".