665128277354 has 8 divisors (see below), whose sum is σ = 997890425280. Its totient is φ = 332498135596.

The previous prime is 665128277327. The next prime is 665128277369. The reversal of 665128277354 is 453772821566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 665128277354.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32988944 + ... + 33009099.

It is an arithmetic number, because the mean of its divisors is an integer number (124736303160).

Almost surely, 2^665128277354 is an apocalyptic number.

665128277354 is a deficient number, since it is larger than the sum of its proper divisors (332762147926).

665128277354 is a wasteful number, since it uses less digits than its factorization.

665128277354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66003084.

The product of its digits is 16934400, while the sum is 56.

The spelling of 665128277354 in words is "six hundred sixty-five billion, one hundred twenty-eight million, two hundred seventy-seven thousand, three hundred fifty-four".