10218660688 has 10 divisors (see below), whose sum is σ = 19798655114. Its totient is φ = 5109330336.

The previous prime is 10218660677. The next prime is 10218660689. The reversal of 10218660688 is 88606681201.

It can be written as a sum of positive squares in only one way, i.e., 9558581824 + 660078864 = 97768^2 + 25692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10218660689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319333131 + ... + 319333162.

Almost surely, 2^10218660688 is an apocalyptic number.

It is an amenable number.

10218660688 is a deficient number, since it is larger than the sum of its proper divisors (9579994426).

10218660688 is an equidigital number, since it uses as much as digits as its factorization.

10218660688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638666301 (or 638666295 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The spelling of 10218660688 in words is "ten billion, two hundred eighteen million, six hundred sixty thousand, six hundred eighty-eight".