1720132670353 has 4 divisors (see below), whose sum is σ = 1720137003300. Its totient is φ = 1720128337408.

The previous prime is 1720132670329. The next prime is 1720132670413. The reversal of 1720132670353 is 3530762310271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 977343800449 + 742788869904 = 988607^2 + 861852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720132670353 - 2²⁵ = 1720099115921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720132670453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503328 + ... + 2387521.

It is an arithmetic number, because the mean of its divisors is an integer number (430034250825).

Almost surely, 2^{1720132670353} is an apocalyptic number.

It is an amenable number.

1720132670353 is a deficient number, since it is larger than the sum of its proper divisors (4332947).

1720132670353 is an equidigital number, since it uses as much as digits as its factorization.

1720132670353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332946.

The product of its (nonzero) digits is 158760, while the sum is 40.

The spelling of 1720132670353 in words is "one trillion, seven hundred twenty billion, one hundred thirty-two million, six hundred seventy thousand, three hundred fifty-three".