17257559923 has 2 divisors, whose sum is σ = 17257559924. Its totient is φ = 17257559922.

The previous prime is 17257559881. The next prime is 17257559941. The reversal of 17257559923 is 32995575271.

It is a strong prime.

It is an emirp because it is prime and its reverse (32995575271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17257559923 is a prime.

It is not a weakly prime, because it can be changed into another prime (17257559323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8628779961 + 8628779962.

It is an arithmetic number, because the mean of its divisors is an integer number (8628779962).

Almost surely, 2^17257559923 is an apocalyptic number.

17257559923 is a deficient number, since it is larger than the sum of its proper divisors (1).

17257559923 is an equidigital number, since it uses as much as digits as its factorization.

17257559923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5953500, while the sum is 55.

The spelling of 17257559923 in words is "seventeen billion, two hundred fifty-seven million, five hundred fifty-nine thousand, nine hundred twenty-three".