7999101128 has 36 divisors (see below), whose sum is σ = 15194837115. Its totient is φ = 3947818608.

The previous prime is 7999101119. The next prime is 7999101139. The reversal of 7999101128 is 8211019997.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 3999550564 + 3999550564 = 63242^2 + 63242^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=63242.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26055551 + ... + 26055857.

Almost surely, 2^7999101128 is an apocalyptic number.

It is an amenable number.

7999101128 is a deficient number, since it is larger than the sum of its proper divisors (7195735987).

7999101128 is an equidigital number, since it uses as much as digits as its factorization.

7999101128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 47.

The square root of 7999101128 is about 89437.6941115993. The cubic root of 7999101128 is about 1999.9250911944.

The spelling of 7999101128 in words is "seven billion, nine hundred ninety-nine million, one hundred one thousand, one hundred twenty-eight".