427444343537 has 4 divisors (see below), whose sum is σ = 432247089060. Its totient is φ = 422641598016.

The previous prime is 427444343531. The next prime is 427444343563. The reversal of 427444343537 is 735343444724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 287471834896 + 139972508641 = 536164^2 + 374129^2 .

It is a cyclic number.

It is not a de Polignac number, because 427444343537 - 2²² = 427440149233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427444343531) 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 3 ways as a sum of consecutive naturals, for example, 2401372628 + ... + 2401372805.

It is an arithmetic number, because the mean of its divisors is an integer number (108061772265).

Almost surely, 2^427444343537 is an apocalyptic number.

It is an amenable number.

427444343537 is a deficient number, since it is larger than the sum of its proper divisors (4802745523).

427444343537 is an equidigital number, since it uses as much as digits as its factorization.

427444343537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802745522.

The product of its digits is 13547520, while the sum is 50.

The spelling of 427444343537 in words is "four hundred twenty-seven billion, four hundred forty-four million, three hundred forty-three thousand, five hundred thirty-seven".