6539463788 has 72 divisors (see below), whose sum is σ = 13646646720. Its totient is φ = 2717856960.

The previous prime is 6539463767. The next prime is 6539463839. The reversal of 6539463788 is 8873649356.

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, 791543 + ... + 799761.

It is an arithmetic number, because the mean of its divisors is an integer number (189536760).

Almost surely, 2^6539463788 is an apocalyptic number.

It is an amenable number.

6539463788 is an abundant number, since it is smaller than the sum of its proper divisors (7107182932).

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

6539463788 is a wasteful number, since it uses less digits than its factorization.

6539463788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8367 (or 8352 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 59.

The square root of 6539463788 is about 80866.9511481668. The cubic root of 6539463788 is about 1870.0248586399.

The spelling of 6539463788 in words is "six billion, five hundred thirty-nine million, four hundred sixty-three thousand, seven hundred eighty-eight".