6165640513 has 2 divisors, whose sum is σ = 6165640514. Its totient is φ = 6165640512.

The previous prime is 6165640487. The next prime is 6165640519. The reversal of 6165640513 is 3150465616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6145462449 + 20178064 = 78393^2 + 4492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6165640513 is a prime.

It is not a weakly prime, because it can be changed into another prime (6165640519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3082820256 + 3082820257.

It is an arithmetic number, because the mean of its divisors is an integer number (3082820257).

Almost surely, 2^6165640513 is an apocalyptic number.

It is an amenable number.

6165640513 is a deficient number, since it is larger than the sum of its proper divisors (1).

6165640513 is an equidigital number, since it uses as much as digits as its factorization.

6165640513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 6165640513 is about 78521.5926545049. The cubic root of 6165640513 is about 1833.6906332113.

The spelling of 6165640513 in words is "six billion, one hundred sixty-five million, six hundred forty thousand, five hundred thirteen".