542435551566 has 32 divisors (see below), whose sum is σ = 1103267858688. Its totient is φ = 177760154880.

The previous prime is 542435551561. The next prime is 542435551613. The reversal of 542435551566 is 665155534245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542435551561) 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 15 ways as a sum of consecutive naturals, for example, 1653196 + ... + 1953951.

It is an arithmetic number, because the mean of its divisors is an integer number (34477120584).

Almost surely, 2^542435551566 is an apocalyptic number.

542435551566 is an abundant number, since it is smaller than the sum of its proper divisors (560832307122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542435551566 is a wasteful number, since it uses less digits than its factorization.

542435551566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607576.

The product of its digits is 10800000, while the sum is 51.

The spelling of 542435551566 in words is "five hundred forty-two billion, four hundred thirty-five million, five hundred fifty-one thousand, five hundred sixty-six".