6556745756 has 24 divisors (see below), whose sum is σ = 12729588480. Its totient is φ = 2929823600.

The previous prime is 6556745753. The next prime is 6556745761. The reversal of 6556745756 is 6575476556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556745753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260260 + ... + 1265451.

It is an arithmetic number, because the mean of its divisors is an integer number (530399520).

Almost surely, 2^6556745756 is an apocalyptic number.

It is an amenable number.

6556745756 is a deficient number, since it is larger than the sum of its proper divisors (6172842724).

6556745756 is a wasteful number, since it uses less digits than its factorization.

6556745756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525785 (or 2525783 counting only the distinct ones).

The product of its digits is 26460000, while the sum is 56.

The square root of 6556745756 is about 80973.7349762255. The cubic root of 6556745756 is about 1871.6707266426.

The spelling of 6556745756 in words is "six billion, five hundred fifty-six million, seven hundred forty-five thousand, seven hundred fifty-six".