1720743571140 has 48 divisors (see below), whose sum is σ = 5256089455680. Its totient is φ = 417149956480.

The previous prime is 1720743571117. The next prime is 1720743571213. The reversal of 1720743571140 is 411753470271.

It is a junction number, because it is equal to n+sod(n) for n = 1720743571092 and 1720743571101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1303592955 + ... + 1303594274.

It is an arithmetic number, because the mean of its divisors is an integer number (109501863660).

Almost surely, 2^{1720743571140} is an apocalyptic number.

1720743571140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720743571140 is an abundant number, since it is smaller than the sum of its proper divisors (3535345884540).

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

1720743571140 is a wasteful number, since it uses less digits than its factorization.

1720743571140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607187252 (or 2607187250 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 1720743571140 in words is "one trillion, seven hundred twenty billion, seven hundred forty-three million, five hundred seventy-one thousand, one hundred forty".