542216156605 has 16 divisors (see below), whose sum is σ = 656270604144. Its totient is φ = 430040442880.

The previous prime is 542216156593. The next prime is 542216156609. The reversal of 542216156605 is 506651612245.

It can be written as a sum of positive squares in 8 ways, for example, as 33728791716 + 508487364889 = 183654^2 + 713083^2 .

It is not a de Polignac number, because 542216156605 - 2¹⁵ = 542216123837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542216156609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209 + ... + 1041361.

It is an arithmetic number, because the mean of its divisors is an integer number (41016912759).

Almost surely, 2^542216156605 is an apocalyptic number.

It is an amenable number.

542216156605 is a deficient number, since it is larger than the sum of its proper divisors (114054447539).

542216156605 is a wasteful number, since it uses less digits than its factorization.

542216156605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041056.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 542216156605 in words is "five hundred forty-two billion, two hundred sixteen million, one hundred fifty-six thousand, six hundred five".