665254253104 has 40 divisors (see below), whose sum is σ = 1473121428480. Its totient is φ = 285097654848.

The previous prime is 665254253051. The next prime is 665254253137. The reversal of 665254253104 is 401352452566.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3111267 + ... + 3318205.

It is an arithmetic number, because the mean of its divisors is an integer number (36828035712).

Almost surely, 2^665254253104 is an apocalyptic number.

It is an amenable number.

665254253104 is an abundant number, since it is smaller than the sum of its proper divisors (807867175376).

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

665254253104 is a wasteful number, since it uses less digits than its factorization.

665254253104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235657 (or 235651 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 665254253104 in words is "six hundred sixty-five billion, two hundred fifty-four million, two hundred fifty-three thousand, one hundred four".