17016720157 has 4 divisors (see below), whose sum is σ = 17021420640. Its totient is φ = 17012019676.

The previous prime is 17016720143. The next prime is 17016720179. The reversal of 17016720157 is 75102761071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75102761071 = 13 ⋅5777135467.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17016720157 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 (17016720557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2344807 + ... + 2352052.

It is an arithmetic number, because the mean of its divisors is an integer number (4255355160).

Almost surely, 2^17016720157 is an apocalyptic number.

It is an amenable number.

17016720157 is a deficient number, since it is larger than the sum of its proper divisors (4700483).

17016720157 is an equidigital number, since it uses as much as digits as its factorization.

17016720157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700482.

The product of its (nonzero) digits is 20580, while the sum is 37.

The spelling of 17016720157 in words is "seventeen billion, sixteen million, seven hundred twenty thousand, one hundred fifty-seven".