6648539279958 has 32 divisors (see below), whose sum is σ = 14774678229600. Its totient is φ = 2216157785568.

The previous prime is 6648539279911. The next prime is 6648539279983. The reversal of 6648539279958 is 8599729358466.

6648539279958 is a `hidden beast` number, since 6 + 6 + 4 + 8 + 539 + 2 + 79 + 9 + 5 + 8 = 666.

It is a super-2 number, since 2×6648539279958² (a number of 26 digits) contains 22 as substring.

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, 5435448 + ... + 6545316.

It is an arithmetic number, because the mean of its divisors is an integer number (461708694675).

Almost surely, 2^{6648539279958} is an apocalyptic number.

6648539279958 is an abundant number, since it is smaller than the sum of its proper divisors (8126138949642).

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

6648539279958 is a wasteful number, since it uses less digits than its factorization.

6648539279958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220813 (or 1220807 counting only the distinct ones).

The product of its digits is 7054387200, while the sum is 81.

The spelling of 6648539279958 in words is "six trillion, six hundred forty-eight billion, five hundred thirty-nine million, two hundred seventy-nine thousand, nine hundred fifty-eight".