665115061053 has 4 divisors (see below), whose sum is σ = 886820081408. Its totient is φ = 443410040700.

The previous prime is 665115060997. The next prime is 665115061057. The reversal of 665115061053 is 350160511566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 665115061053 - 2⁹ = 665115060541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665115061057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110852510173 + ... + 110852510178.

It is an arithmetic number, because the mean of its divisors is an integer number (221705020352).

Almost surely, 2^665115061053 is an apocalyptic number.

It is an amenable number.

665115061053 is a deficient number, since it is larger than the sum of its proper divisors (221705020355).

665115061053 is a wasteful number, since it uses less digits than its factorization.

665115061053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221705020354.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 665115061053 in words is "six hundred sixty-five billion, one hundred fifteen million, sixty-one thousand, fifty-three".