1720617012023 has 32 divisors (see below), whose sum is σ = 2136943656960. Its totient is φ = 1349011117440.

The previous prime is 1720617011963. The next prime is 1720617012041. The reversal of 1720617012023 is 3202107160271.

It is not a de Polignac number, because 1720617012023 - 2⁶ = 1720617011959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720617012083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9490958 + ... + 9670548.

It is an arithmetic number, because the mean of its divisors is an integer number (66779489280).

Almost surely, 2^{1720617012023} is an apocalyptic number.

1720617012023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1720617012023 is a deficient number, since it is larger than the sum of its proper divisors (416326644937).

1720617012023 is a wasteful number, since it uses less digits than its factorization.

1720617012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180567.

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 1720617012023 in words is "one trillion, seven hundred twenty billion, six hundred seventeen million, twelve thousand, twenty-three".