1720661260308 has 48 divisors (see below), whose sum is σ = 4087342336896. Its totient is φ = 563268902400.

The previous prime is 1720661260273. The next prime is 1720661260309. The reversal of 1720661260308 is 8030621660271.

It is a self number, because there is not a number n which added to its sum of digits gives 1720661260308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720661260309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010968 + ... + 4419183.

It is an arithmetic number, because the mean of its divisors is an integer number (85152965352).

Almost surely, 2^{1720661260308} is an apocalyptic number.

It is an amenable number.

1720661260308 is an abundant number, since it is smaller than the sum of its proper divisors (2366681076588).

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

1720661260308 is a wasteful number, since it uses less digits than its factorization.

1720661260308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430464 (or 8430462 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 1720661260308 in words is "one trillion, seven hundred twenty billion, six hundred sixty-one million, two hundred sixty thousand, three hundred eight".