6558639252 has 48 divisors (see below), whose sum is σ = 17049940992. Its totient is φ = 1945178080.

The previous prime is 6558639211. The next prime is 6558639281. The reversal of 6558639252 is 2529368556.

It is a junction number, because it is equal to n+sod(n) for n = 6558639195 and 6558639204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522378 + ... + 534785.

It is an arithmetic number, because the mean of its divisors is an integer number (355207104).

Almost surely, 2^6558639252 is an apocalyptic number.

It is an amenable number.

6558639252 is an abundant number, since it is smaller than the sum of its proper divisors (10491301740).

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

6558639252 is a wasteful number, since it uses less digits than its factorization.

6558639252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057228 (or 1057226 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 51.

The square root of 6558639252 is about 80985.4261703919. The cubic root of 6558639252 is about 1871.8508800331.

The spelling of 6558639252 in words is "six billion, five hundred fifty-eight million, six hundred thirty-nine thousand, two hundred fifty-two".