6640011356 has 24 divisors (see below), whose sum is σ = 12704655600. Its totient is φ = 3011456000.

The previous prime is 6640011319. The next prime is 6640011373. The reversal of 6640011356 is 6531100466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148295 + ... + 187806.

It is an arithmetic number, because the mean of its divisors is an integer number (529360650).

Almost surely, 2^6640011356 is an apocalyptic number.

It is an amenable number.

6640011356 is a deficient number, since it is larger than the sum of its proper divisors (6064644244).

6640011356 is a wasteful number, since it uses less digits than its factorization.

6640011356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336565 (or 336563 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 6640011356 is about 81486.2648303381. The cubic root of 6640011356 is about 1879.5603464897.

The spelling of 6640011356 in words is "six billion, six hundred forty million, eleven thousand, three hundred fifty-six".