1720423855104 has 176 divisors, whose sum is σ = 4603301067456. Its totient is φ = 571260928000.

The previous prime is 1720423855099. The next prime is 1720423855141. The reversal of 1720423855104 is 4015583240271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1264087384 + ... + 1264088744.

Almost surely, 2^{1720423855104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1720423855104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2301650533728).

1720423855104 is an abundant number, since it is smaller than the sum of its proper divisors (2882877212352).

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

1720423855104 is a wasteful number, since it uses less digits than its factorization.

1720423855104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 1720423855104 in words is "one trillion, seven hundred twenty billion, four hundred twenty-three million, eight hundred fifty-five thousand, one hundred four".