6999055128 has 96 divisors (see below), whose sum is σ = 21170058000. Its totient is φ = 2153547648.

The previous prime is 6999055109. The next prime is 6999055169. The reversal of 6999055128 is 8215509996.

6999055128 is a `hidden beast` number, since 69 + 9 + 9 + 0 + 551 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113203 + ... + 163746.

Almost surely, 2^6999055128 is an apocalyptic number.

It is an amenable number.

6999055128 is an abundant number, since it is smaller than the sum of its proper divisors (14171002872).

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

6999055128 is a wasteful number, since it uses less digits than its factorization.

6999055128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276983 (or 276967 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The square root of 6999055128 is about 83660.3557726119. The cubic root of 6999055128 is about 1912.8451086560.

The spelling of 6999055128 in words is "six billion, nine hundred ninety-nine million, fifty-five thousand, one hundred twenty-eight".