17428943756779 has 4 divisors (see below), whose sum is σ = 17899996290784. Its totient is φ = 16957891222776.

The previous prime is 17428943756767. The next prime is 17428943756801. The reversal of 17428943756779 is 97765734982471.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17428943756779 - 2³⁵ = 17394584018411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17428943756699 and 17428943756708.

It is not an unprimeable number, because it can be changed into a prime (17428943756579) 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, 235526266947 + ... + 235526267020.

It is an arithmetic number, because the mean of its divisors is an integer number (4474999072696).

Almost surely, 2^{17428943756779} is an apocalyptic number.

17428943756779 is a deficient number, since it is larger than the sum of its proper divisors (471052534005).

17428943756779 is an equidigital number, since it uses as much as digits as its factorization.

17428943756779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471052534004.

The product of its digits is 4480842240, while the sum is 79.

The spelling of 17428943756779 in words is "seventeen trillion, four hundred twenty-eight billion, nine hundred forty-three million, seven hundred fifty-six thousand, seven hundred seventy-nine".