542613655649 has 8 divisors (see below), whose sum is σ = 584361540840. Its totient is φ = 500866966656.

The previous prime is 542613655603. The next prime is 542613655699. The reversal of 542613655649 is 946556316245.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50326192225 + 492287463424 = 224335^2 + 701632^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 542613655649 - 2¹² = 542613651553 is a prime.

It is a super-2 number, since 2×542613655649² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 542613655594 and 542613655603.

It is not an unprimeable number, because it can be changed into a prime (542613655699) 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 7 ways as a sum of consecutive naturals, for example, 789989 + ... + 1307405.

It is an arithmetic number, because the mean of its divisors is an integer number (73045192605).

Almost surely, 2^542613655649 is an apocalyptic number.

It is an amenable number.

542613655649 is a deficient number, since it is larger than the sum of its proper divisors (41747885191).

542613655649 is a wasteful number, since it uses less digits than its factorization.

542613655649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598099.

The product of its digits is 23328000, while the sum is 56.

The spelling of 542613655649 in words is "five hundred forty-two billion, six hundred thirteen million, six hundred fifty-five thousand, six hundred forty-nine".