1720202032040 has 64 divisors (see below), whose sum is σ = 3888146180160. Its totient is φ = 684936645120.

The previous prime is 1720202032033. The next prime is 1720202032049. The reversal of 1720202032040 is 402302020271.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1720202031997 and 1720202032015.

It is not an unprimeable number, because it can be changed into a prime (1720202032049) 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 15 ways as a sum of consecutive naturals, for example, 74744135 + ... + 74767145.

It is an arithmetic number, because the mean of its divisors is an integer number (60752284065).

Almost surely, 2^{1720202032040} is an apocalyptic number.

1720202032040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720202032040 is an abundant number, since it is smaller than the sum of its proper divisors (2167944148120).

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

1720202032040 is a wasteful number, since it uses less digits than its factorization.

1720202032040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31482 (or 31478 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The spelling of 1720202032040 in words is "one trillion, seven hundred twenty billion, two hundred two million, thirty-two thousand, forty".