2123630650664 has 16 divisors (see below), whose sum is σ = 4047083003220. Its totient is φ = 1044408516480.

The previous prime is 2123630650657. The next prime is 2123630650699. The reversal of 2123630650664 is 4660560363212.

It can be written as a sum of positive squares in 2 ways, for example, as 2060252588164 + 63378062500 = 1435358^2 + 251750^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175850589 + ... + 2175851564.

Almost surely, 2^{2123630650664} is an apocalyptic number.

It is an amenable number.

2123630650664 is a deficient number, since it is larger than the sum of its proper divisors (1923452352556).

2123630650664 is a wasteful number, since it uses less digits than its factorization.

2123630650664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351702220 (or 4351702216 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 2123630650664 in words is "two trillion, one hundred twenty-three billion, six hundred thirty million, six hundred fifty thousand, six hundred sixty-four".