542033246581 has 2 divisors, whose sum is σ = 542033246582. Its totient is φ = 542033246580.

The previous prime is 542033246563. The next prime is 542033246597. The reversal of 542033246581 is 185642330245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315995758225 + 226037488356 = 562135^2 + 475434^2 .

It is a cyclic number.

It is not a de Polignac number, because 542033246581 - 2²³ = 542024857973 is a prime.

It is a super-2 number, since 2×542033246581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542133246581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271016623290 + 271016623291.

It is an arithmetic number, because the mean of its divisors is an integer number (271016623291).

Almost surely, 2^542033246581 is an apocalyptic number.

It is an amenable number.

542033246581 is a deficient number, since it is larger than the sum of its proper divisors (1).

542033246581 is an equidigital number, since it uses as much as digits as its factorization.

542033246581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 542033246581 in words is "five hundred forty-two billion, thirty-three million, two hundred forty-six thousand, five hundred eighty-one".