6553640331 has 12 divisors (see below), whose sum is σ = 10818707952. Its totient is φ = 3744937296.

The previous prime is 6553640299. The next prime is 6553640381. The reversal of 6553640331 is 1330463556.

6553640331 is a `hidden beast` number, since 6 + 5 + 5 + 3 + 640 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 6553640331 - 2⁵ = 6553640299 is a prime.

It is a super-2 number, since 2×6553640331² = 85900403176219579122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6553640381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52012956 + ... + 52013081.

It is an arithmetic number, because the mean of its divisors is an integer number (901558996).

Almost surely, 2^6553640331 is an apocalyptic number.

6553640331 is a deficient number, since it is larger than the sum of its proper divisors (4265067621).

6553640331 is a wasteful number, since it uses less digits than its factorization.

6553640331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104026050 (or 104026047 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 6553640331 is about 80954.5571972326. The cubic root of 6553640331 is about 1871.3751912687.

The spelling of 6553640331 in words is "six billion, five hundred fifty-three million, six hundred forty thousand, three hundred thirty-one".