17930475505 has 4 divisors (see below), whose sum is σ = 21516570612. Its totient is φ = 14344380400.

The previous prime is 17930475499. The next prime is 17930475509. The reversal of 17930475505 is 50557403971.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50557403971 = 2657 ⋅19028003.

It can be written as a sum of positive squares in 2 ways, for example, as 12867726096 + 5062749409 = 113436^2 + 71153^2 .

It is not a de Polignac number, because 17930475505 - 2⁵ = 17930475473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17930475509) 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, 1793047546 + ... + 1793047555.

It is an arithmetic number, because the mean of its divisors is an integer number (5379142653).

Almost surely, 2^17930475505 is an apocalyptic number.

It is an amenable number.

17930475505 is a deficient number, since it is larger than the sum of its proper divisors (3586095107).

17930475505 is an equidigital number, since it uses as much as digits as its factorization.

17930475505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3586095106.

The product of its (nonzero) digits is 661500, while the sum is 46.

The spelling of 17930475505 in words is "seventeen billion, nine hundred thirty million, four hundred seventy-five thousand, five hundred five".