6656271040 has 112 divisors (see below), whose sum is σ = 16088868000. Its totient is φ = 2622758912.

The previous prime is 6656271031. The next prime is 6656271049. The reversal of 6656271040 is 401726566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6656271031) and next prime (6656271049).

It is not an unprimeable number, because it can be changed into a prime (6656271049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6531651 + ... + 6532669.

Almost surely, 2^6656271040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6656271040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8044434000).

6656271040 is an abundant number, since it is smaller than the sum of its proper divisors (9432596960).

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

6656271040 is a wasteful number, since it uses less digits than its factorization.

6656271040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 6656271040 is about 81585.9733042390. The cubic root of 6656271040 is about 1881.0932829131.

The spelling of 6656271040 in words is "six billion, six hundred fifty-six million, two hundred seventy-one thousand, forty".