665332444398 has 8 divisors (see below), whose sum is σ = 1330664888808. Its totient is φ = 221777481464.

The previous prime is 665332444379. The next prime is 665332444411. The reversal of 665332444398 is 893444233566.

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

665332444398 is an admirable number.

It is a congruent number.

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, 55444370361 + ... + 55444370372.

It is an arithmetic number, because the mean of its divisors is an integer number (166333111101).

Almost surely, 2^665332444398 is an apocalyptic number.

665332444398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665332444398 is a wasteful number, since it uses less digits than its factorization.

665332444398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110888740738.

The product of its digits is 44789760, while the sum is 57.

The spelling of 665332444398 in words is "six hundred sixty-five billion, three hundred thirty-two million, four hundred forty-four thousand, three hundred ninety-eight".