665231060101 has 8 divisors (see below), whose sum is σ = 665530073208. Its totient is φ = 664932120000.

The previous prime is 665231060099. The next prime is 665231060113. The reversal of 665231060101 is 101060132566.

665231060101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 207002250625 + 458228809476 = 454975^2 + 676926^2 .

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 665231060101 - 2¹ = 665231060099 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 (665231060171) 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, 25591531 + ... + 25617511.

It is an arithmetic number, because the mean of its divisors is an integer number (83191259151).

Almost surely, 2^665231060101 is an apocalyptic number.

It is an amenable number.

665231060101 is a deficient number, since it is larger than the sum of its proper divisors (299013107).

665231060101 is a wasteful number, since it uses less digits than its factorization.

665231060101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36503.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 665231060101 its reverse (101060132566), we get a palindrome (766291192667).

The spelling of 665231060101 in words is "six hundred sixty-five billion, two hundred thirty-one million, sixty thousand, one hundred one".