13776331261 has 16 divisors (see below), whose sum is σ = 17221040640. Its totient is φ = 10706456880.

The previous prime is 13776331237. The next prime is 13776331297. The reversal of 13776331261 is 16213367731.

13776331261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13776331261 - 2⁷ = 13776331133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13776331861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206851 + ... + 265216.

It is an arithmetic number, because the mean of its divisors is an integer number (1076315040).

Almost surely, 2^13776331261 is an apocalyptic number.

13776331261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13776331261 is a deficient number, since it is larger than the sum of its proper divisors (3444709379).

13776331261 is a wasteful number, since it uses less digits than its factorization.

13776331261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472464.

The product of its digits is 95256, while the sum is 40.

Adding to 13776331261 its reverse (16213367731), we get a palindrome (29989698992).

The spelling of 13776331261 in words is "thirteen billion, seven hundred seventy-six million, three hundred thirty-one thousand, two hundred sixty-one".