665032631363506 has 8 divisors (see below), whose sum is σ = 1140055939480320. Its totient is φ = 285013984870068.

The previous prime is 665032631363479. The next prime is 665032631363561. The reversal of 665032631363506 is 605363136230566.

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

It is a super-2 number, since 2×665032631363506² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23751165405826 + ... + 23751165405853.

It is an arithmetic number, because the mean of its divisors is an integer number (142506992435040).

Almost surely, 2^{665032631363506} is an apocalyptic number.

665032631363506 is a deficient number, since it is larger than the sum of its proper divisors (475023308116814).

665032631363506 is a wasteful number, since it uses less digits than its factorization.

665032631363506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47502330811688.

The product of its (nonzero) digits is 31492800, while the sum is 55.

The spelling of 665032631363506 in words is "six hundred sixty-five trillion, thirty-two billion, six hundred thirty-one million, three hundred sixty-three thousand, five hundred six".