11078780307817 has 8 divisors (see below), whose sum is σ = 11186828846856. Its totient is φ = 10970907316992.

The previous prime is 11078780307787. The next prime is 11078780307821. The reversal of 11078780307817 is 71870308787011.

11078780307817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1283482802281 + 9795297505536 = 1132909^2 + 3129744^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11078780307817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11078780307857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43760218 + ... + 44012659.

It is an arithmetic number, because the mean of its divisors is an integer number (1398353605857).

Almost surely, 2^{11078780307817} is an apocalyptic number.

It is an amenable number.

11078780307817 is a deficient number, since it is larger than the sum of its proper divisors (108048539039).

11078780307817 is a wasteful number, since it uses less digits than its factorization.

11078780307817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87774107.

The product of its (nonzero) digits is 3687936, while the sum is 58.

The spelling of 11078780307817 in words is "eleven trillion, seventy-eight billion, seven hundred eighty million, three hundred seven thousand, eight hundred seventeen".