542433487181 has 2 divisors, whose sum is σ = 542433487182. Its totient is φ = 542433487180.

The previous prime is 542433487153. The next prime is 542433487229. The reversal of 542433487181 is 181784334245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395809589956 + 146623897225 = 629134^2 + 382915^2 .

It is a cyclic number.

It is not a de Polignac number, because 542433487181 - 2⁶ = 542433487117 is a prime.

It is a super-2 number, since 2×542433487181² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542433487121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271216743590 + 271216743591.

It is an arithmetic number, because the mean of its divisors is an integer number (271216743591).

Almost surely, 2^542433487181 is an apocalyptic number.

It is an amenable number.

542433487181 is a deficient number, since it is larger than the sum of its proper divisors (1).

542433487181 is an equidigital number, since it uses as much as digits as its factorization.

542433487181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 50.

The spelling of 542433487181 in words is "five hundred forty-two billion, four hundred thirty-three million, four hundred eighty-seven thousand, one hundred eighty-one".