13042778111 has 4 divisors (see below), whose sum is σ = 14228485224. Its totient is φ = 11857071000.

The previous prime is 13042778071. The next prime is 13042778137. The reversal of 13042778111 is 11187724031.

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 13042778111 - 2¹⁴ = 13042761727 is a prime.

It is a super-2 number, since 2×13042778111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042778191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592853540 + ... + 592853561.

It is an arithmetic number, because the mean of its divisors is an integer number (3557121306).

Almost surely, 2^13042778111 is an apocalyptic number.

13042778111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13042778111 is a deficient number, since it is larger than the sum of its proper divisors (1185707113).

13042778111 is a wasteful number, since it uses less digits than its factorization.

13042778111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185707112.

The product of its (nonzero) digits is 9408, while the sum is 35.

The spelling of 13042778111 in words is "thirteen billion, forty-two million, seven hundred seventy-eight thousand, one hundred eleven".