866130805072388 has 6 divisors (see below), whose sum is σ = 1515728908876686. Its totient is φ = 433065402536192.

The previous prime is 866130805072349. The next prime is 866130805072451. The reversal of 866130805072388 is 883270508031668.

866130805072388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 862916357691844 + 3214447380544 = 29375438^2 + 1792888^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108266350634045 + ... + 108266350634052.

It is an arithmetic number, because the mean of its divisors is an integer number (252621484812781).

Almost surely, 2^{866130805072388} is an apocalyptic number.

It is an amenable number.

866130805072388 is a deficient number, since it is larger than the sum of its proper divisors (649598103804298).

866130805072388 is a wasteful number, since it uses less digits than its factorization.

866130805072388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216532701268101 (or 216532701268099 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 866130805072388 in words is "eight hundred sixty-six trillion, one hundred thirty billion, eight hundred five million, seventy-two thousand, three hundred eighty-eight".