6478621395 has 16 divisors (see below), whose sum is σ = 10367639712. Its totient is φ = 3454649600.

The previous prime is 6478621379. The next prime is 6478621399. The reversal of 6478621395 is 5931268746.

It is not a de Polignac number, because 6478621395 - 2⁴ = 6478621379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6478621399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56119 + ... + 126911.

It is an arithmetic number, because the mean of its divisors is an integer number (647977482).

Almost surely, 2^6478621395 is an apocalyptic number.

6478621395 is a deficient number, since it is larger than the sum of its proper divisors (3889018317).

6478621395 is a wasteful number, since it uses less digits than its factorization.

6478621395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76902.

The product of its digits is 2177280, while the sum is 51.

The square root of 6478621395 is about 80489.8838053578. The cubic root of 6478621395 is about 1864.2072828907.

The spelling of 6478621395 in words is "six billion, four hundred seventy-eight million, six hundred twenty-one thousand, three hundred ninety-five".