5640656010066 has 128 divisors (see below), whose sum is σ = 16131914219520. Its totient is φ = 1417843958400.

The previous prime is 5640656010037. The next prime is 5640656010083. The reversal of 5640656010066 is 6600106560465.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21751411 + ... + 22009206.

It is an arithmetic number, because the mean of its divisors is an integer number (126030579840).

Almost surely, 2^{5640656010066} is an apocalyptic number.

5640656010066 is an abundant number, since it is smaller than the sum of its proper divisors (10491258209454).

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

5640656010066 is a wasteful number, since it uses less digits than its factorization.

5640656010066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43760677 (or 43760671 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 5640656010066 in words is "five trillion, six hundred forty billion, six hundred fifty-six million, ten thousand, sixty-six".