17120556671 has 4 divisors (see below), whose sum is σ = 17361691344. Its totient is φ = 16879422000.

The previous prime is 17120556659. The next prime is 17120556749. The reversal of 17120556671 is 17665502171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17665502171 = 4933 ⋅3581087.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17120556671 is a prime.

It is a super-2 number, since 2×17120556671² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17120556611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120567230 + ... + 120567371.

It is an arithmetic number, because the mean of its divisors is an integer number (4340422836).

Almost surely, 2^17120556671 is an apocalyptic number.

17120556671 is a deficient number, since it is larger than the sum of its proper divisors (241134673).

17120556671 is an equidigital number, since it uses as much as digits as its factorization.

17120556671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241134672.

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 17120556671 in words is "seventeen billion, one hundred twenty million, five hundred fifty-six thousand, six hundred seventy-one".