54234778181 has 2 divisors, whose sum is σ = 54234778182. Its totient is φ = 54234778180.

The previous prime is 54234778177. The next prime is 54234778189. The reversal of 54234778181 is 18187743245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39299494081 + 14935284100 = 198241^2 + 122210^2 .

It is a cyclic number.

It is not a de Polignac number, because 54234778181 - 2² = 54234778177 is a prime.

It is a super-2 number, since 2×54234778181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54234778189) 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 as a sum of consecutive naturals, namely, 27117389090 + 27117389091.

It is an arithmetic number, because the mean of its divisors is an integer number (27117389091).

Almost surely, 2^54234778181 is an apocalyptic number.

It is an amenable number.

54234778181 is a deficient number, since it is larger than the sum of its proper divisors (1).

54234778181 is an equidigital number, since it uses as much as digits as its factorization.

54234778181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 50.

The spelling of 54234778181 in words is "fifty-four billion, two hundred thirty-four million, seven hundred seventy-eight thousand, one hundred eighty-one".