1720504508255 has 16 divisors (see below), whose sum is σ = 2256606607584. Its totient is φ = 1251563322240.

The previous prime is 1720504508243. The next prime is 1720504508267. The reversal of 1720504508255 is 5528054050271.

It is an interprime number because it is at equal distance from previous prime (1720504508243) and next prime (1720504508267).

It is a de Polignac number, because none of the positive numbers 2^k-1720504508255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197527736 + ... + 197536445.

It is an arithmetic number, because the mean of its divisors is an integer number (141037912974).

Almost surely, 2^{1720504508255} is an apocalyptic number.

1720504508255 is a deficient number, since it is larger than the sum of its proper divisors (536102099329).

1720504508255 is a wasteful number, since it uses less digits than its factorization.

1720504508255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395064266.

The product of its (nonzero) digits is 560000, while the sum is 44.

The spelling of 1720504508255 in words is "one trillion, seven hundred twenty billion, five hundred four million, five hundred eight thousand, two hundred fifty-five".