1720717070051 has 6 divisors (see below), whose sum is σ = 2001650469300. Its totient is φ = 1474900345716.

The previous prime is 1720717069993. The next prime is 1720717070053. The reversal of 1720717070051 is 1500707170271.

It is a de Polignac number, because none of the positive numbers 2^k-1720717070051 is a prime.

It is a super-2 number, since 2×1720717070051² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1720717069987 and 1720717070014.

It is not an unprimeable number, because it can be changed into a prime (1720717070053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17558337401 + ... + 17558337498.

It is an arithmetic number, because the mean of its divisors is an integer number (333608411550).

Almost surely, 2^{1720717070051} is an apocalyptic number.

1720717070051 is a deficient number, since it is larger than the sum of its proper divisors (280933399249).

1720717070051 is an equidigital number, since it uses as much as digits as its factorization.

1720717070051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35116674913 (or 35116674906 counting only the distinct ones).

The product of its (nonzero) digits is 24010, while the sum is 38.

The spelling of 1720717070051 in words is "one trillion, seven hundred twenty billion, seven hundred seventeen million, seventy thousand, fifty-one".