665886413162488 has 64 divisors (see below), whose sum is σ = 1447105962240000. Its totient is φ = 281339197655040.

The previous prime is 665886413162459. The next prime is 665886413162507. The reversal of 665886413162488 is 884261314688566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46357681 + ... + 58998367.

It is an arithmetic number, because the mean of its divisors is an integer number (22611030660000).

Almost surely, 2^{665886413162488} is an apocalyptic number.

It is an amenable number.

665886413162488 is an abundant number, since it is smaller than the sum of its proper divisors (781219549077512).

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

665886413162488 is a wasteful number, since it uses less digits than its factorization.

665886413162488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12654020 (or 12654016 counting only the distinct ones).

The product of its digits is 2548039680, while the sum is 76.

The spelling of 665886413162488 in words is "six hundred sixty-five trillion, eight hundred eighty-six billion, four hundred thirteen million, one hundred sixty-two thousand, four hundred eighty-eight".