1720273642530 has 32 divisors (see below), whose sum is σ = 4128836364288. Its totient is φ = 458719680000.

The previous prime is 1720273642523. The next prime is 1720273642537. The reversal of 1720273642530 is 352463720271.

It is an interprime number because it is at equal distance from previous prime (1720273642523) and next prime (1720273642537).

It is a super-3 number, since 3×1720273642530³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1720273642537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539746 + ... + 1931805.

It is an arithmetic number, because the mean of its divisors is an integer number (129026136384).

Almost surely, 2^{1720273642530} is an apocalyptic number.

1720273642530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1720273642530 is an abundant number, since it is smaller than the sum of its proper divisors (2408562721758).

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

1720273642530 is a wasteful number, since it uses less digits than its factorization.

1720273642530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494762.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 1720273642530 in words is "one trillion, seven hundred twenty billion, two hundred seventy-three million, six hundred forty-two thousand, five hundred thirty".