665133250506015 has 16 divisors (see below), whose sum is σ = 1064563155897696. Its totient is φ = 354621081907200.

The previous prime is 665133250505993. The next prime is 665133250506031. The reversal of 665133250506015 is 510605052331566.

It is not a de Polignac number, because 665133250506015 - 2¹² = 665133250501919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7290683866 + ... + 7290775095.

It is an arithmetic number, because the mean of its divisors is an integer number (66535197243606).

Almost surely, 2^{665133250506015} is an apocalyptic number.

665133250506015 is a deficient number, since it is larger than the sum of its proper divisors (399429905391681).

665133250506015 is a wasteful number, since it uses less digits than its factorization.

665133250506015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14581462010.

The product of its (nonzero) digits is 2430000, while the sum is 48.

The spelling of 665133250506015 in words is "six hundred sixty-five trillion, one hundred thirty-three billion, two hundred fifty million, five hundred six thousand, fifteen".