6988425128 has 32 divisors (see below), whose sum is σ = 13354605000. Its totient is φ = 3427833600.

The previous prime is 6988425121. The next prime is 6988425137. The reversal of 6988425128 is 8215248896.

It can be written as a sum of positive squares in 4 ways, for example, as 6345396964 + 643028164 = 79658^2 + 25358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6988425128.

It is not an unprimeable number, because it can be changed into a prime (6988425121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48398 + ... + 127746.

Almost surely, 2^6988425128 is an apocalyptic number.

It is an amenable number.

6988425128 is a deficient number, since it is larger than the sum of its proper divisors (6366179872).

6988425128 is a wasteful number, since it uses less digits than its factorization.

6988425128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79565 (or 79561 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 53.

The square root of 6988425128 is about 83596.8009435768. The cubic root of 6988425128 is about 1911.8762232916.

The spelling of 6988425128 in words is "six billion, nine hundred eighty-eight million, four hundred twenty-five thousand, one hundred twenty-eight".