1712721111045 has 32 divisors (see below), whose sum is σ = 3134274158592. Its totient is φ = 782347904832.

The previous prime is 1712721111029. The next prime is 1712721111071. The reversal of 1712721111045 is 5401111272171.

It is not a de Polignac number, because 1712721111045 - 2⁴ = 1712721111029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1712721110997 and 1712721111015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6222117 + ... + 6491546.

It is an arithmetic number, because the mean of its divisors is an integer number (97946067456).

Almost surely, 2^{1712721111045} is an apocalyptic number.

1712721111045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1712721111045 is a deficient number, since it is larger than the sum of its proper divisors (1421553047547).

1712721111045 is a wasteful number, since it uses less digits than its factorization.

1712721111045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714961.

The product of its (nonzero) digits is 3920, while the sum is 33.

The spelling of 1712721111045 in words is "one trillion, seven hundred twelve billion, seven hundred twenty-one million, one hundred eleven thousand, forty-five".