542561556603 has 16 divisors (see below), whose sum is σ = 789198595200. Its totient is φ = 328817623680.

The previous prime is 542561556587. The next prime is 542561556623. The reversal of 542561556603 is 306655165245.

It is not a de Polignac number, because 542561556603 - 2⁴ = 542561556587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542561556623) 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, 1490268 + ... + 1818246.

It is an arithmetic number, because the mean of its divisors is an integer number (49324912200).

Almost surely, 2^542561556603 is an apocalyptic number.

542561556603 is a deficient number, since it is larger than the sum of its proper divisors (246637038597).

542561556603 is a wasteful number, since it uses less digits than its factorization.

542561556603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378122.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 542561556603 in words is "five hundred forty-two billion, five hundred sixty-one million, five hundred fifty-six thousand, six hundred three".