13170066783 has 4 divisors (see below), whose sum is σ = 17560089048. Its totient is φ = 8780044520.

The previous prime is 13170066779. The next prime is 13170066827. The reversal of 13170066783 is 38766007131.

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 13170066783 - 2² = 13170066779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13170066383) 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, 2195011128 + ... + 2195011133.

It is an arithmetic number, because the mean of its divisors is an integer number (4390022262).

Almost surely, 2^13170066783 is an apocalyptic number.

13170066783 is a deficient number, since it is larger than the sum of its proper divisors (4390022265).

13170066783 is an equidigital number, since it uses as much as digits as its factorization.

13170066783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390022264.

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 13170066783 in words is "thirteen billion, one hundred seventy million, sixty-six thousand, seven hundred eighty-three".