54811778771 has 2 divisors, whose sum is σ = 54811778772. Its totient is φ = 54811778770.

The previous prime is 54811778737. The next prime is 54811778783. The reversal of 54811778771 is 17787711845.

It is a happy number.

54811778771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54811778771 - 2¹⁰ = 54811777747 is a prime.

It is not a weakly prime, because it can be changed into another prime (54811778701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27405889385 + 27405889386.

It is an arithmetic number, because the mean of its divisors is an integer number (27405889386).

Almost surely, 2^54811778771 is an apocalyptic number.

54811778771 is a deficient number, since it is larger than the sum of its proper divisors (1).

54811778771 is an equidigital number, since it uses as much as digits as its factorization.

54811778771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3073280, while the sum is 56.

The spelling of 54811778771 in words is "fifty-four billion, eight hundred eleven million, seven hundred seventy-eight thousand, seven hundred seventy-one".