10640645221320 has 64 divisors (see below), whose sum is σ = 35468817408000. Its totient is φ = 2837505392064.

The previous prime is 10640645221309. The next prime is 10640645221337. The reversal of 10640645221320 is 2312254604601.

10640645221320 is a `hidden beast` number, since 1 + 0 + 6 + 4 + 0 + 645 + 2 + 2 + 1 + 3 + 2 + 0 = 666.

It is a super-2 number, since 2×10640645221320² (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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4926223560 + ... + 4926225719.

It is an arithmetic number, because the mean of its divisors is an integer number (554200272000).

Almost surely, 2^{10640645221320} is an apocalyptic number.

10640645221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10640645221320 is an abundant number, since it is smaller than the sum of its proper divisors (24828172186680).

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

10640645221320 is a wasteful number, since it uses less digits than its factorization.

10640645221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9852449299 (or 9852449289 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 10640645221320 its reverse (2312254604601), we get a palindrome (12952899825921).

The spelling of 10640645221320 in words is "ten trillion, six hundred forty billion, six hundred forty-five million, two hundred twenty-one thousand, three hundred twenty".