12643330020516 has 72 divisors (see below), whose sum is σ = 35914386755520. Its totient is φ = 3721113849024.

The previous prime is 12643330020463. The next prime is 12643330020533. The reversal of 12643330020516 is 61502003334621.

12643330020516 is a `hidden beast` number, since 1 + 2 + 6 + 433 + 3 + 0 + 0 + 205 + 16 = 666.

It is a super-2 number, since 2×12643330020516² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587286246 + ... + 587307773.

It is an arithmetic number, because the mean of its divisors is an integer number (498810927160).

Almost surely, 2^{12643330020516} is an apocalyptic number.

It is an amenable number.

12643330020516 is an abundant number, since it is smaller than the sum of its proper divisors (23271056735004).

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

12643330020516 is a wasteful number, since it uses less digits than its factorization.

12643330020516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174594065 (or 1174594060 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 12643330020516 in words is "twelve trillion, six hundred forty-three billion, three hundred thirty million, twenty thousand, five hundred sixteen".