6521316037 has 4 divisors (see below), whose sum is σ = 6522299980. Its totient is φ = 6520332096.

The previous prime is 6521315987. The next prime is 6521316071. The reversal of 6521316037 is 7306131256.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 593701956 + 5927614081 = 24366^2 + 76991^2 .

It is a cyclic number.

It is not a de Polignac number, because 6521316037 - 2⁷ = 6521315909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6521315993 and 6521316011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521316337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481962 + ... + 495307.

It is an arithmetic number, because the mean of its divisors is an integer number (1630574995).

Almost surely, 2^6521316037 is an apocalyptic number.

It is an amenable number.

6521316037 is a deficient number, since it is larger than the sum of its proper divisors (983943).

6521316037 is an equidigital number, since it uses as much as digits as its factorization.

6521316037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983942.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 6521316037 is about 80754.6657289844. The cubic root of 6521316037 is about 1868.2934125633.

The spelling of 6521316037 in words is "six billion, five hundred twenty-one million, three hundred sixteen thousand, thirty-seven".