5551693128 has 128 divisors (see below), whose sum is σ = 16378588800. Its totient is φ = 1736368128.

The previous prime is 5551693123. The next prime is 5551693139. The reversal of 5551693128 is 8213961555.

5551693128 is a `hidden beast` number, since 5 + 5 + 516 + 9 + 3 + 128 = 666.

It is a super-3 number, since 3×5551693128³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5551693123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1294075 + ... + 1298357.

It is an arithmetic number, because the mean of its divisors is an integer number (127957725).

Almost surely, 2^5551693128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5551693128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8189294400).

5551693128 is an abundant number, since it is smaller than the sum of its proper divisors (10826895672).

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

5551693128 is a wasteful number, since it uses less digits than its factorization.

5551693128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 4658 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 5551693128 is about 74509.6847933207. The cubic root of 5551693128 is about 1770.6870759750.

The spelling of 5551693128 in words is "five billion, five hundred fifty-one million, six hundred ninety-three thousand, one hundred twenty-eight".