13811147477 has 2 divisors, whose sum is σ = 13811147478. Its totient is φ = 13811147476.

The previous prime is 13811147459. The next prime is 13811147501. The reversal of 13811147477 is 77474111831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12986653681 + 824493796 = 113959^2 + 28714^2 .

It is an emirp because it is prime and its reverse (77474111831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13811147477 - 2⁸ = 13811147221 is a prime.

It is a super-3 number, since 3×13811147477³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13811147407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6905573738 + 6905573739.

It is an arithmetic number, because the mean of its divisors is an integer number (6905573739).

Almost surely, 2^13811147477 is an apocalyptic number.

It is an amenable number.

13811147477 is a deficient number, since it is larger than the sum of its proper divisors (1).

13811147477 is an equidigital number, since it uses as much as digits as its factorization.

13811147477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 44.

The spelling of 13811147477 in words is "thirteen billion, eight hundred eleven million, one hundred forty-seven thousand, four hundred seventy-seven".