6520538748 has 24 divisors (see below), whose sum is σ = 15568419328. Its totient is φ = 2122965936.

The previous prime is 6520538747. The next prime is 6520538767. The reversal of 6520538748 is 8478350256.

It is a junction number, because it is equal to n+sod(n) for n = 6520538697 and 6520538706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520538741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6317836 + ... + 6318867.

Almost surely, 2^6520538748 is an apocalyptic number.

It is an amenable number.

6520538748 is an abundant number, since it is smaller than the sum of its proper divisors (9047880580).

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

6520538748 is a wasteful number, since it uses less digits than its factorization.

6520538748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12636753 (or 12636751 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The square root of 6520538748 is about 80749.8529286586. The cubic root of 6520538748 is about 1868.2191810426.

The spelling of 6520538748 in words is "six billion, five hundred twenty million, five hundred thirty-eight thousand, seven hundred forty-eight".