17711711642 has 4 divisors (see below), whose sum is σ = 26567567466. Its totient is φ = 8855855820.

The previous prime is 17711711639. The next prime is 17711711671. The reversal of 17711711642 is 24611711771.

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: 24611711771 = 313 ⋅78631667.

It can be written as a sum of positive squares in only one way, i.e., 17490327001 + 221384641 = 132251^2 + 14879^2 .

It is a junction number, because it is equal to n+sod(n) for n = 17711711596 and 17711711605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4427927909 + ... + 4427927912.

Almost surely, 2^17711711642 is an apocalyptic number.

17711711642 is a deficient number, since it is larger than the sum of its proper divisors (8855855824).

17711711642 is an equidigital number, since it uses as much as digits as its factorization.

17711711642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8855855823.

The product of its digits is 16464, while the sum is 38.

The spelling of 17711711642 in words is "seventeen billion, seven hundred eleven million, seven hundred eleven thousand, six hundred forty-two".