6520739059 has 16 divisors (see below), whose sum is σ = 6937164000. Its totient is φ = 6119491840.

The previous prime is 6520739033. The next prime is 6520739077. The reversal of 6520739059 is 9509370256.

It is a happy number.

It is not a de Polignac number, because 6520739059 - 2¹⁷ = 6520607987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6520799059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130869 + ... + 173689.

It is an arithmetic number, because the mean of its divisors is an integer number (433572750).

Almost surely, 2^6520739059 is an apocalyptic number.

6520739059 is a deficient number, since it is larger than the sum of its proper divisors (416424941).

6520739059 is a wasteful number, since it uses less digits than its factorization.

6520739059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42998.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 6520739059 is about 80751.0932371816. The cubic root of 6520739059 is about 1868.2383114159.

The spelling of 6520739059 in words is "six billion, five hundred twenty million, seven hundred thirty-nine thousand, fifty-nine".