6501040001 has 2 divisors, whose sum is σ = 6501040002. Its totient is φ = 6501040000.

The previous prime is 6501039983. The next prime is 6501040031. The reversal of 6501040001 is 1000401056.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4634886400 + 1866153601 = 68080^2 + 43199^2 .

It is a cyclic number.

It is not a de Polignac number, because 6501040001 - 2²² = 6496845697 is a prime.

It is not a weakly prime, because it can be changed into another prime (6501040031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250520000 + 3250520001.

It is an arithmetic number, because the mean of its divisors is an integer number (3250520001).

Almost surely, 2^6501040001 is an apocalyptic number.

It is an amenable number.

6501040001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501040001 is an equidigital number, since it uses as much as digits as its factorization.

6501040001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 6501040001 is about 80629.0270374138. The cubic root of 6501040001 is about 1866.3551068272.

Adding to 6501040001 its reverse (1000401056), we get a palindrome (7501441057).

The spelling of 6501040001 in words is "six billion, five hundred one million, forty thousand, one".