427001131465 has 4 divisors (see below), whose sum is σ = 512401357764. Its totient is φ = 341600905168.

The previous prime is 427001131441. The next prime is 427001131493. The reversal of 427001131465 is 564131100724.

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 225665851849 + 201335279616 = 475043^2 + 448704^2 .

It is a cyclic number.

It is not a de Polignac number, because 427001131465 - 2¹⁹ = 427000607177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427001131465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42700113142 + ... + 42700113151.

It is an arithmetic number, because the mean of its divisors is an integer number (128100339441).

Almost surely, 2^427001131465 is an apocalyptic number.

It is an amenable number.

427001131465 is a deficient number, since it is larger than the sum of its proper divisors (85400226299).

427001131465 is an equidigital number, since it uses as much as digits as its factorization.

427001131465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85400226298.

The product of its (nonzero) digits is 20160, while the sum is 34.

It can be divided in two parts, 4270011 and 31465, that added together give a square (4301476 = 2074²).

The spelling of 427001131465 in words is "four hundred twenty-seven billion, one million, one hundred thirty-one thousand, four hundred sixty-five".