1720104006157 has 8 divisors (see below), whose sum is σ = 1752726864384. Its totient is φ = 1687487372688.

The previous prime is 1720104006059. The next prime is 1720104006197. The reversal of 1720104006157 is 7516004010271.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720104006157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720104006197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996393 + ... + 2105470.

It is an arithmetic number, because the mean of its divisors is an integer number (219090858048).

Almost surely, 2^{1720104006157} is an apocalyptic number.

It is an amenable number.

1720104006157 is a deficient number, since it is larger than the sum of its proper divisors (32622858227).

1720104006157 is a wasteful number, since it uses less digits than its factorization.

1720104006157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112379.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 1720104006157 in words is "one trillion, seven hundred twenty billion, one hundred four million, six thousand, one hundred fifty-seven".