6621155160 has 64 divisors (see below), whose sum is σ = 20019916800. Its totient is φ = 1751734656.

The previous prime is 6621155011. The next prime is 6621155161. The reversal of 6621155160 is 615511266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621155161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201990 + ... + 232469.

It is an arithmetic number, because the mean of its divisors is an integer number (312811200).

Almost surely, 2^6621155160 is an apocalyptic number.

6621155160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6621155160 is an abundant number, since it is smaller than the sum of its proper divisors (13398761640).

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

6621155160 is a wasteful number, since it uses less digits than its factorization.

6621155160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434600 (or 434596 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 6621155160 is about 81370.4808883418. The cubic root of 6621155160 is about 1877.7794780539.

The spelling of 6621155160 in words is "six billion, six hundred twenty-one million, one hundred fifty-five thousand, one hundred sixty".