665151500505 has 16 divisors (see below), whose sum is σ = 1067206872960. Its totient is φ = 353759309568.

The previous prime is 665151500459. The next prime is 665151500537. The reversal of 665151500505 is 505005151566.

It is not a de Polignac number, because 665151500505 - 2¹⁴ = 665151484121 is a prime.

It is a Curzon 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, 61754272 + ... + 61765041.

It is an arithmetic number, because the mean of its divisors is an integer number (66700429560).

Almost surely, 2^665151500505 is an apocalyptic number.

It is an amenable number.

665151500505 is a deficient number, since it is larger than the sum of its proper divisors (402055372455).

665151500505 is a wasteful number, since it uses less digits than its factorization.

665151500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123519680.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 665151500505 in words is "six hundred sixty-five billion, one hundred fifty-one million, five hundred thousand, five hundred five".