54127772181 has 20 divisors (see below), whose sum is σ = 92408613792. Its totient is φ = 30930155208.

The previous prime is 54127772161. The next prime is 54127772221. The reversal of 54127772181 is 18127772145.

It is a happy number.

54127772181 is a `hidden beast` number, since 541 + 2 + 7 + 7 + 7 + 21 + 81 = 666.

It is not a de Polignac number, because 54127772181 - 2²³ = 54119383573 is a prime.

It is a super-2 number, since 2×54127772181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54127772141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47731155 + ... + 47732288.

Almost surely, 2^54127772181 is an apocalyptic number.

It is an amenable number.

54127772181 is a deficient number, since it is larger than the sum of its proper divisors (38280841611).

54127772181 is an equidigital number, since it uses as much as digits as its factorization.

54127772181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95463462 (or 95463453 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The spelling of 54127772181 in words is "fifty-four billion, one hundred twenty-seven million, seven hundred seventy-two thousand, one hundred eighty-one".