6506371601 has 2 divisors, whose sum is σ = 6506371602. Its totient is φ = 6506371600.

The previous prime is 6506371493. The next prime is 6506371639. The reversal of 6506371601 is 1061736056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4942090000 + 1564281601 = 70300^2 + 39551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6506371601 is a prime.

It is not a weakly prime, because it can be changed into another prime (6506371661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3253185800 + 3253185801.

It is an arithmetic number, because the mean of its divisors is an integer number (3253185801).

Almost surely, 2^6506371601 is an apocalyptic number.

It is an amenable number.

6506371601 is a deficient number, since it is larger than the sum of its proper divisors (1).

6506371601 is an equidigital number, since it uses as much as digits as its factorization.

6506371601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 6506371601 is about 80662.0827960697. The cubic root of 6506371601 is about 1866.8651759801.

The spelling of 6506371601 in words is "six billion, five hundred six million, three hundred seventy-one thousand, six hundred one".