10643312671556 has 12 divisors (see below), whose sum is σ = 18656181840492. Its totient is φ = 5312975002848.

The previous prime is 10643312671477. The next prime is 10643312671567. The reversal of 10643312671556 is 65517621334601.

It can be written as a sum of positive squares in 2 ways, for example, as 2194000838656 + 8449311832900 = 1481216^2 + 2906770^2 .

It is a super-2 number, since 2×10643312671556² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170330475 + ... + 2170335378.

It is an arithmetic number, because the mean of its divisors is an integer number (1554681820041).

Almost surely, 2^{10643312671556} is an apocalyptic number.

It is an amenable number.

10643312671556 is a deficient number, since it is larger than the sum of its proper divisors (8012869168936).

10643312671556 is a wasteful number, since it uses less digits than its factorization.

10643312671556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340666470 (or 4340666468 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 10643312671556 in words is "ten trillion, six hundred forty-three billion, three hundred twelve million, six hundred seventy-one thousand, five hundred fifty-six".