665130740353 has 4 divisors (see below), whose sum is σ = 665286403588. Its totient is φ = 664975077120.

The previous prime is 665130740347. The next prime is 665130740371. The reversal of 665130740353 is 353047031566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 260899273089 + 404231467264 = 510783^2 + 635792^2 .

It is a cyclic number.

It is not a de Polignac number, because 665130740353 - 2¹⁷ = 665130609281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665130740753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77825208 + ... + 77833753.

It is an arithmetic number, because the mean of its divisors is an integer number (166321600897).

Almost surely, 2^665130740353 is an apocalyptic number.

It is an amenable number.

665130740353 is a deficient number, since it is larger than the sum of its proper divisors (155663235).

665130740353 is a wasteful number, since it uses less digits than its factorization.

665130740353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155663234.

The product of its (nonzero) digits is 680400, while the sum is 43.

The spelling of 665130740353 in words is "six hundred sixty-five billion, one hundred thirty million, seven hundred forty thousand, three hundred fifty-three".