6121648128 has 52 divisors (see below), whose sum is σ = 16322435048. Its totient is φ = 2040545280.

The previous prime is 6121648109. The next prime is 6121648153. The reversal of 6121648128 is 8218461216.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236803 + ... + 261378.

Almost surely, 2^6121648128 is an apocalyptic number.

It is an amenable number.

6121648128 is an abundant number, since it is smaller than the sum of its proper divisors (10200786920).

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

6121648128 is an equidigital number, since it uses as much as digits as its factorization.

6121648128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498208 (or 498186 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 6121648128 is about 78240.9619572766. The cubic root of 6121648128 is about 1829.3190383464.

The spelling of 6121648128 in words is "six billion, one hundred twenty-one million, six hundred forty-eight thousand, one hundred twenty-eight".