6539779356 has 48 divisors (see below), whose sum is σ = 17033858688. Its totient is φ = 1935662400.

The previous prime is 6539779307. The next prime is 6539779369.

6539779356 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6539779356.

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, 570415 + ... + 581766.

It is an arithmetic number, because the mean of its divisors is an integer number (354872056).

Almost surely, 2^6539779356 is an apocalyptic number.

6539779356 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6539779356 is an abundant number, since it is smaller than the sum of its proper divisors (10494079332).

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

6539779356 is a wasteful number, since it uses less digits than its factorization.

6539779356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152242 (or 1152240 counting only the distinct ones).

The product of its digits is 32148900, while the sum is 60.

The square root of 6539779356 is about 80868.9022801719. The cubic root of 6539779356 is about 1870.0549380945.

The spelling of 6539779356 in words is "six billion, five hundred thirty-nine million, seven hundred seventy-nine thousand, three hundred fifty-six".