6516550501001 has 2 divisors, whose sum is σ = 6516550501002. Its totient is φ = 6516550501000.

The previous prime is 6516550500991. The next prime is 6516550501073. The reversal of 6516550501001 is 1001050556156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6145693860601 + 370856640400 = 2479051^2 + 608980^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516550501001 - 2³⁸ = 6241672594057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6516550501081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258275250500 + 3258275250501.

It is an arithmetic number, because the mean of its divisors is an integer number (3258275250501).

Almost surely, 2^{6516550501001} is an apocalyptic number.

It is an amenable number.

6516550501001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516550501001 is an equidigital number, since it uses as much as digits as its factorization.

6516550501001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 6516550501001 in words is "six trillion, five hundred sixteen billion, five hundred fifty million, five hundred one thousand, one".