6621128050 has 12 divisors (see below), whose sum is σ = 12315298266. Its totient is φ = 2648451200.

The previous prime is 6621127987. The next prime is 6621128051. The reversal of 6621128050 is 508211266.

It can be written as a sum of positive squares in 3 ways, for example, as 6053306809 + 567821241 = 77803^2 + 23829^2 .

It is not an unprimeable number, because it can be changed into a prime (6621128051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66211231 + ... + 66211330.

Almost surely, 2^6621128050 is an apocalyptic number.

6621128050 is a deficient number, since it is larger than the sum of its proper divisors (5694170216).

6621128050 is a wasteful number, since it uses less digits than its factorization.

6621128050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132422573 (or 132422568 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 6621128050 is about 81370.3143044194. The cubic root of 6621128050 is about 1877.7769152246.

The spelling of 6621128050 in words is "six billion, six hundred twenty-one million, one hundred twenty-eight thousand, fifty".