665331481300 has 36 divisors (see below), whose sum is σ = 1443809408860. Its totient is φ = 266125201920.

The previous prime is 665331481249. The next prime is 665331481301. The reversal of 665331481300 is 3184133566.

It can be written as a sum of positive squares in 6 ways, for example, as 328984839184 + 336346642116 = 573572^2 + 579954^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665331481301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4833022 + ... + 4968778.

Almost surely, 2^665331481300 is an apocalyptic number.

It is an amenable number.

665331481300 is an abundant number, since it is smaller than the sum of its proper divisors (778477927560).

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

665331481300 is a wasteful number, since it uses less digits than its factorization.

665331481300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184780 (or 184773 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 665331481300 in words is "six hundred sixty-five billion, three hundred thirty-one million, four hundred eighty-one thousand, three hundred".