665612563133031 has 8 divisors (see below), whose sum is σ = 887487591435120. Its totient is φ = 443739621793152.

The previous prime is 665612563133029. The next prime is 665612563133087. The reversal of 665612563133031 is 130331365216566.

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

It is not a de Polignac number, because 665612563133031 - 2¹ = 665612563133029 is a prime.

It is a super-2 number, since 2×665612563133031² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665612563138031) 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, 520996210 + ... + 522272223.

It is an arithmetic number, because the mean of its divisors is an integer number (110935948929390).

Almost surely, 2^{665612563133031} is an apocalyptic number.

665612563133031 is a deficient number, since it is larger than the sum of its proper divisors (221875028302089).

665612563133031 is a wasteful number, since it uses less digits than its factorization.

665612563133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043481105.

The product of its (nonzero) digits is 5248800, while the sum is 51.

The spelling of 665612563133031 in words is "six hundred sixty-five trillion, six hundred twelve billion, five hundred sixty-three million, one hundred thirty-three thousand, thirty-one".