6552115128 has 72 divisors (see below), whose sum is σ = 19215373320. Its totient is φ = 2016031680.

The previous prime is 6552115117. The next prime is 6552115139. The reversal of 6552115128 is 8215112556.

6552115128 is a `hidden beast` number, since 6 + 5 + 521 + 1 + 5 + 128 = 666.

It is an interprime number because it is at equal distance from previous prime (6552115117) and next prime (6552115139).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6552115092 and 6552115101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 257068 + ... + 281403.

It is an arithmetic number, because the mean of its divisors is an integer number (266880185).

Almost surely, 2^6552115128 is an apocalyptic number.

It is an amenable number.

6552115128 is an abundant number, since it is smaller than the sum of its proper divisors (12663258192).

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

6552115128 is a wasteful number, since it uses less digits than its factorization.

6552115128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538509 (or 538489 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

The square root of 6552115128 is about 80945.1365308627. The cubic root of 6552115128 is about 1871.2300074035.

The spelling of 6552115128 in words is "six billion, five hundred fifty-two million, one hundred fifteen thousand, one hundred twenty-eight".