6656556502 has 16 divisors (see below), whose sum is σ = 10006837200. Its totient is φ = 3320954080.

The previous prime is 6656556481. The next prime is 6656556509. The reversal of 6656556502 is 2056556566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656556509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2385324 + ... + 2388112.

It is an arithmetic number, because the mean of its divisors is an integer number (625427325).

Almost surely, 2^6656556502 is an apocalyptic number.

6656556502 is a deficient number, since it is larger than the sum of its proper divisors (3350280698).

6656556502 is a wasteful number, since it uses less digits than its factorization.

6656556502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The square root of 6656556502 is about 81587.7227406183. The cubic root of 6656556502 is about 1881.1201734935.

The spelling of 6656556502 in words is "six billion, six hundred fifty-six million, five hundred fifty-six thousand, five hundred two".