6715132561 has 8 divisors (see below), whose sum is σ = 6947028648. Its totient is φ = 6486480000.

The previous prime is 6715132559. The next prime is 6715132573. The reversal of 6715132561 is 1652315176.

It can be written as a sum of positive squares in 4 ways, for example, as 401240961 + 6313891600 = 20031^2 + 79460^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6715132561 - 2¹ = 6715132559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6715132561.

It is not an unprimeable number, because it can be changed into a prime (6715132511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806670 + ... + 814951.

It is an arithmetic number, because the mean of its divisors is an integer number (868378581).

Almost surely, 2^6715132561 is an apocalyptic number.

It is an amenable number.

6715132561 is a deficient number, since it is larger than the sum of its proper divisors (231896087).

6715132561 is a wasteful number, since it uses less digits than its factorization.

6715132561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621763.

The product of its digits is 37800, while the sum is 37.

The square root of 6715132561 is about 81945.9124117854. The cubic root of 6715132561 is about 1886.6218652592.

The spelling of 6715132561 in words is "six billion, seven hundred fifteen million, one hundred thirty-two thousand, five hundred sixty-one".