665131027411 has 8 divisors (see below), whose sum is σ = 670094726544. Its totient is φ = 660168904320.

The previous prime is 665131027409. The next prime is 665131027481. The reversal of 665131027411 is 114720131566.

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 665131027411 - 2¹ = 665131027409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665131027481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460071 + ... + 1241743.

It is an arithmetic number, because the mean of its divisors is an integer number (83761840818).

Almost surely, 2^665131027411 is an apocalyptic number.

665131027411 is a deficient number, since it is larger than the sum of its proper divisors (4963699133).

665131027411 is a wasteful number, since it uses less digits than its factorization.

665131027411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788021.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 665131027411 its reverse (114720131566), we get a palindrome (779851158977).

The spelling of 665131027411 in words is "six hundred sixty-five billion, one hundred thirty-one million, twenty-seven thousand, four hundred eleven".