542559981869 has 16 divisors (see below), whose sum is σ = 562709790720. Its totient is φ = 522576820080.

The previous prime is 542559981857. The next prime is 542559981877. The reversal of 542559981869 is 968189955245.

It is a cyclic number.

It is not a de Polignac number, because 542559981869 - 2⁴ = 542559981853 is a prime.

It is a super-2 number, since 2×542559981869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542559980869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41796422 + ... + 41809400.

It is an arithmetic number, because the mean of its divisors is an integer number (35169361920).

Almost surely, 2^542559981869 is an apocalyptic number.

It is an amenable number.

542559981869 is a deficient number, since it is larger than the sum of its proper divisors (20149808851).

542559981869 is a wasteful number, since it uses less digits than its factorization.

542559981869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19280.

The product of its digits is 279936000, while the sum is 71.

The spelling of 542559981869 in words is "five hundred forty-two billion, five hundred fifty-nine million, nine hundred eighty-one thousand, eight hundred sixty-nine".