6999760128 has 36 divisors (see below), whose sum is σ = 18629571968. Its totient is φ = 2333253120.

The previous prime is 6999760127. The next prime is 6999760139. The reversal of 6999760128 is 8210679996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999760121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4556368 + ... + 4557903.

Almost surely, 2^6999760128 is an apocalyptic number.

It is an amenable number.

6999760128 is an abundant number, since it is smaller than the sum of its proper divisors (11629811840).

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

6999760128 is an equidigital number, since it uses as much as digits as its factorization.

6999760128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9114290 (or 9114276 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 57.

The square root of 6999760128 is about 83664.5691317418. The cubic root of 6999760128 is about 1912.9093321119.

The spelling of 6999760128 in words is "six billion, nine hundred ninety-nine million, seven hundred sixty thousand, one hundred twenty-eight".