542606811578 has 8 divisors (see below), whose sum is σ = 876518695668. Its totient is φ = 250433913024.

The previous prime is 542606811577. The next prime is 542606811581. The reversal of 542606811578 is 875118606245.

It can be written as a sum of positive squares in 2 ways, for example, as 536018729689 + 6588081889 = 732133^2 + 81167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×542606811578³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (542606811577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10434746351 + ... + 10434746402.

Almost surely, 2^542606811578 is an apocalyptic number.

542606811578 is a deficient number, since it is larger than the sum of its proper divisors (333911884090).

542606811578 is a wasteful number, since it uses less digits than its factorization.

542606811578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20869492768.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 542606811578 in words is "five hundred forty-two billion, six hundred six million, eight hundred eleven thousand, five hundred seventy-eight".