665214065462631 has 8 divisors (see below), whose sum is σ = 888654490524144. Its totient is φ = 442624842021440.

The previous prime is 665214065462549. The next prime is 665214065462633. The reversal of 665214065462631 is 136264560412566.

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 665214065462631 - 2⁷ = 665214065462503 is a prime.

It is a super-2 number, since 2×665214065462631² (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 (665214065462633) 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, 212800403256 + ... + 212800406381.

It is an arithmetic number, because the mean of its divisors is an integer number (111081811315518).

Almost surely, 2^{665214065462631} is an apocalyptic number.

665214065462631 is a deficient number, since it is larger than the sum of its proper divisors (223440425061513).

665214065462631 is a wasteful number, since it uses less digits than its factorization.

665214065462631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425600810161.

The product of its (nonzero) digits is 37324800, while the sum is 57.

The spelling of 665214065462631 in words is "six hundred sixty-five trillion, two hundred fourteen billion, sixty-five million, four hundred sixty-two thousand, six hundred thirty-one".