6395661801 has 64 divisors (see below), whose sum is σ = 10389504000. Its totient is φ = 3873381120.

The previous prime is 6395661781. The next prime is 6395661821. The reversal of 6395661801 is 1081665936.

6395661801 is a `hidden beast` number, since 6 + 3 + 9 + 566 + 1 + 80 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6395661781) and next prime (6395661821).

It is not a de Polignac number, because 6395661801 - 2⁹ = 6395661289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6395661821) 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 in 63 ways as a sum of consecutive naturals, for example, 1795260 + ... + 1798818.

It is an arithmetic number, because the mean of its divisors is an integer number (162336000).

Almost surely, 2^6395661801 is an apocalyptic number.

It is an amenable number.

6395661801 is a deficient number, since it is larger than the sum of its proper divisors (3993842199).

6395661801 is a wasteful number, since it uses less digits than its factorization.

6395661801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731 (or 3725 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 6395661801 is about 79972.8816599727. The cubic root of 6395661801 is about 1856.2159357895.

The spelling of 6395661801 in words is "six billion, three hundred ninety-five million, six hundred sixty-one thousand, eight hundred one".