420110255665 has 8 divisors (see below), whose sum is σ = 505255098600. Its totient is φ = 335339676672.

The previous prime is 420110255651. The next prime is 420110255681. The reversal of 420110255665 is 566552011024.

It can be written as a sum of positive squares in 4 ways, for example, as 6676687521 + 413433568144 = 81711^2 + 642988^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 420110255665 - 2⁹ = 420110255153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93563514 + ... + 93568003.

It is an arithmetic number, because the mean of its divisors is an integer number (63156887325).

Almost surely, 2^420110255665 is an apocalyptic number.

It is an amenable number.

420110255665 is a deficient number, since it is larger than the sum of its proper divisors (85144842935).

420110255665 is a wasteful number, since it uses less digits than its factorization.

420110255665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187131971.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 420110255665 its reverse (566552011024), we get a palindrome (986662266689).

The spelling of 420110255665 in words is "four hundred twenty billion, one hundred ten million, two hundred fifty-five thousand, six hundred sixty-five".