665707454130 has 32 divisors (see below), whose sum is σ = 1601387754624. Its totient is φ = 177112002816.

The previous prime is 665707454129. The next prime is 665707454179. The reversal of 665707454130 is 31454707566.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 665707454130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25610854 + ... + 25636833.

It is an arithmetic number, because the mean of its divisors is an integer number (50043367332).

Almost surely, 2^665707454130 is an apocalyptic number.

665707454130 is an abundant number, since it is smaller than the sum of its proper divisors (935680300494).

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

665707454130 is a wasteful number, since it uses less digits than its factorization.

665707454130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51248130.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 665707454130 in words is "six hundred sixty-five billion, seven hundred seven million, four hundred fifty-four thousand, one hundred thirty".