665435425361 has 8 divisors (see below), whose sum is σ = 760504617600. Its totient is φ = 570367980288.

The previous prime is 665435425357. The next prime is 665435425387. The reversal of 665435425361 is 163524534566.

665435425361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 665435425361 - 2² = 665435425357 is a prime.

It is a super-3 number, since 3×665435425361³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (665435425301) 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, 518705 + ... + 1264881.

It is an arithmetic number, because the mean of its divisors is an integer number (95063077200).

Almost surely, 2^665435425361 is an apocalyptic number.

It is an amenable number.

665435425361 is a deficient number, since it is larger than the sum of its proper divisors (95069192239).

665435425361 is a wasteful number, since it uses less digits than its factorization.

665435425361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873583.

The product of its digits is 7776000, while the sum is 50.

The spelling of 665435425361 in words is "six hundred sixty-five billion, four hundred thirty-five million, four hundred twenty-five thousand, three hundred sixty-one".