17782380813 has 16 divisors (see below), whose sum is σ = 23828889600. Its totient is φ = 11795479920.

The previous prime is 17782380799. The next prime is 17782380821. The reversal of 17782380813 is 31808328771.

It is not a de Polignac number, because 17782380813 - 2²⁶ = 17715271949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17782380853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907348 + ... + 926738.

It is an arithmetic number, because the mean of its divisors is an integer number (1489305600).

Almost surely, 2^17782380813 is an apocalyptic number.

It is an amenable number.

17782380813 is a deficient number, since it is larger than the sum of its proper divisors (6046508787).

17782380813 is a wasteful number, since it uses less digits than its factorization.

17782380813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20912.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 17782380813 in words is "seventeen billion, seven hundred eighty-two million, three hundred eighty thousand, eight hundred thirteen".