6651650556 has 48 divisors (see below), whose sum is σ = 17308730880. Its totient is φ = 2209025520.

The previous prime is 6651650519. The next prime is 6651650567. The reversal of 6651650556 is 6550561566.

It is a congruent number.

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, 84366 + ... + 142901.

It is an arithmetic number, because the mean of its divisors is an integer number (360598560).

Almost surely, 2^6651650556 is an apocalyptic number.

It is an amenable number.

6651650556 is an abundant number, since it is smaller than the sum of its proper divisors (10657080324).

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

6651650556 is a wasteful number, since it uses less digits than its factorization.

6651650556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227551 (or 227543 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 6651650556 is about 81557.6517317658. The cubic root of 6651650556 is about 1880.6579253765.

The spelling of 6651650556 in words is "six billion, six hundred fifty-one million, six hundred fifty thousand, five hundred fifty-six".