6520038507 has 12 divisors (see below), whose sum is σ = 9537047520. Its totient is φ = 4291670448.

The previous prime is 6520038487. The next prime is 6520038521. The reversal of 6520038507 is 7058300256.

It is not a de Polignac number, because 6520038507 - 2⁷ = 6520038379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6520038557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4584408 + ... + 4585829.

It is an arithmetic number, because the mean of its divisors is an integer number (794753960).

Almost surely, 2^6520038507 is an apocalyptic number.

6520038507 is a deficient number, since it is larger than the sum of its proper divisors (3017009013).

6520038507 is a wasteful number, since it uses less digits than its factorization.

6520038507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170322 (or 9170319 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 6520038507 is about 80746.7553961148. The cubic root of 6520038507 is about 1868.1714046360.

The spelling of 6520038507 in words is "six billion, five hundred twenty million, thirty-eight thousand, five hundred seven".