17112820523 has 2 divisors, whose sum is σ = 17112820524. Its totient is φ = 17112820522.

The previous prime is 17112820519. The next prime is 17112820541. The reversal of 17112820523 is 32502821171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17112820523 - 2² = 17112820519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17112820523.

It is not a weakly prime, because it can be changed into another prime (17112825523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8556410261 + 8556410262.

It is an arithmetic number, because the mean of its divisors is an integer number (8556410262).

Almost surely, 2^17112820523 is an apocalyptic number.

17112820523 is a deficient number, since it is larger than the sum of its proper divisors (1).

17112820523 is an equidigital number, since it uses as much as digits as its factorization.

17112820523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 17112820523 in words is "seventeen billion, one hundred twelve million, eight hundred twenty thousand, five hundred twenty-three".