427218632517 has 8 divisors (see below), whose sum is σ = 573397193920. Its totient is φ = 282926246400.

The previous prime is 427218632453. The next prime is 427218632537. The reversal of 427218632517 is 715236812724.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427218632517 - 2⁶ = 427218632453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427218632537) 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 7 ways as a sum of consecutive naturals, for example, 471543292 + ... + 471544197.

It is an arithmetic number, because the mean of its divisors is an integer number (71674649240).

Almost surely, 2^427218632517 is an apocalyptic number.

It is an amenable number.

427218632517 is a deficient number, since it is larger than the sum of its proper divisors (146178561403).

427218632517 is a wasteful number, since it uses less digits than its factorization.

427218632517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943087643.

The product of its digits is 1128960, while the sum is 48.

The spelling of 427218632517 in words is "four hundred twenty-seven billion, two hundred eighteen million, six hundred thirty-two thousand, five hundred seventeen".