1720368672404 has 24 divisors (see below), whose sum is σ = 3016538972160. Its totient is φ = 858501980064.

The previous prime is 1720368672359. The next prime is 1720368672409. The reversal of 1720368672404 is 4042768630271.

It is a super-2 number, since 2×1720368672404² (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 (1720368672409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4166837 + ... + 4561059.

It is an arithmetic number, because the mean of its divisors is an integer number (125689123840).

Almost surely, 2^{1720368672404} is an apocalyptic number.

It is an amenable number.

1720368672404 is a deficient number, since it is larger than the sum of its proper divisors (1296170299756).

1720368672404 is a wasteful number, since it uses less digits than its factorization.

1720368672404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396359 (or 396357 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 1720368672404 in words is "one trillion, seven hundred twenty billion, three hundred sixty-eight million, six hundred seventy-two thousand, four hundred four".