1720041210523 has 8 divisors (see below), whose sum is σ = 1721365315488. Its totient is φ = 1718717442624.

The previous prime is 1720041210493. The next prime is 1720041210541. The reversal of 1720041210523 is 3250121400271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1720041210523 - 2²⁵ = 1720007656091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1720041210491 and 1720041210500.

It is not an unprimeable number, because it can be changed into a prime (1720041210583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10647090 + ... + 10807432.

It is an arithmetic number, because the mean of its divisors is an integer number (215170664436).

Almost surely, 2^{1720041210523} is an apocalyptic number.

1720041210523 is a deficient number, since it is larger than the sum of its proper divisors (1324104965).

1720041210523 is a wasteful number, since it uses less digits than its factorization.

1720041210523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168533.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 1720041210523 its reverse (3250121400271), we get a palindrome (4970162610794).

The spelling of 1720041210523 in words is "one trillion, seven hundred twenty billion, forty-one million, two hundred ten thousand, five hundred twenty-three".