5311021644866 has 48 divisors (see below), whose sum is σ = 9298257571512. Its totient is φ = 2268524563200.

The previous prime is 5311021644833. The next prime is 5311021644881. The reversal of 5311021644866 is 6684461201135.

It can be written as a sum of positive squares in 4 ways, for example, as 3294664244641 + 2016357400225 = 1815121^2 + 1419985^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5311021644866.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193247846 + ... + 193275326.

Almost surely, 2^{5311021644866} is an apocalyptic number.

5311021644866 is a deficient number, since it is larger than the sum of its proper divisors (3987235926646).

5311021644866 is a wasteful number, since it uses less digits than its factorization.

5311021644866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34035 (or 34028 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 5311021644866 in words is "five trillion, three hundred eleven billion, twenty-one million, six hundred forty-four thousand, eight hundred sixty-six".