1720505386848 has 48 divisors (see below), whose sum is σ = 4519254007296. Its totient is φ = 573130066560.

The previous prime is 1720505386837. The next prime is 1720505386849. The reversal of 1720505386848 is 8486835050271.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1720505386848² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720505386849) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5659368 + ... + 5955623.

It is an arithmetic number, because the mean of its divisors is an integer number (94151125152).

Almost surely, 2^{1720505386848} is an apocalyptic number.

It is an amenable number.

1720505386848 is an abundant number, since it is smaller than the sum of its proper divisors (2798748620448).

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

1720505386848 is a wasteful number, since it uses less digits than its factorization.

1720505386848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11616547 (or 11616539 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 1720505386848 in words is "one trillion, seven hundred twenty billion, five hundred five million, three hundred eighty-six thousand, eight hundred forty-eight".