665127873435 has 16 divisors (see below), whose sum is σ = 1064831747616. Its totient is φ = 354525815808.

The previous prime is 665127873367. The next prime is 665127873437. The reversal of 665127873435 is 534378721566.

It is not a de Polignac number, because 665127873435 - 2¹³ = 665127865243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665127873437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13039324 + ... + 13090233.

It is an arithmetic number, because the mean of its divisors is an integer number (66551984226).

Almost surely, 2^665127873435 is an apocalyptic number.

665127873435 is a deficient number, since it is larger than the sum of its proper divisors (399703874181).

665127873435 is a wasteful number, since it uses less digits than its factorization.

665127873435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26131262.

The product of its digits is 25401600, while the sum is 57.

The spelling of 665127873435 in words is "six hundred sixty-five billion, one hundred twenty-seven million, eight hundred seventy-three thousand, four hundred thirty-five".