427457481065 has 4 divisors (see below), whose sum is σ = 512948977284. Its totient is φ = 341965984848.

The previous prime is 427457481043. The next prime is 427457481067. The reversal of 427457481065 is 560184754724.

It is a happy number.

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 282610255321 + 144847225744 = 531611^2 + 380588^2 .

It is a cyclic number.

It is not a de Polignac number, because 427457481065 - 2¹² = 427457476969 is a prime.

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 = 427457480998 and 427457481016.

It is not an unprimeable number, because it can be changed into a prime (427457481067) 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, 42745748102 + ... + 42745748111.

It is an arithmetic number, because the mean of its divisors is an integer number (128237244321).

Almost surely, 2^427457481065 is an apocalyptic number.

It is an amenable number.

427457481065 is a deficient number, since it is larger than the sum of its proper divisors (85491496219).

427457481065 is an equidigital number, since it uses as much as digits as its factorization.

427457481065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85491496218.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 427457481065 in words is "four hundred twenty-seven billion, four hundred fifty-seven million, four hundred eighty-one thousand, sixty-five".