6395994055 has 40 divisors (see below), whose sum is σ = 8652636720. Its totient is φ = 4536048000.

The previous prime is 6395994043. The next prime is 6395994071. The reversal of 6395994055 is 5504995936.

It is a happy number.

It is not a de Polignac number, because 6395994055 - 2¹³ = 6395985863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 6395993987 and 6395994005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3000340 + ... + 3002470.

It is an arithmetic number, because the mean of its divisors is an integer number (216315918).

Almost surely, 2^6395994055 is an apocalyptic number.

6395994055 is a deficient number, since it is larger than the sum of its proper divisors (2256642665).

6395994055 is an equidigital number, since it uses as much as digits as its factorization.

6395994055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 6561000, while the sum is 55.

The square root of 6395994055 is about 79974.9589246534. The cubic root of 6395994055 is about 1856.2480786446.

The spelling of 6395994055 in words is "six billion, three hundred ninety-five million, nine hundred ninety-four thousand, fifty-five".