6415458878 has 16 divisors (see below), whose sum is σ = 10225278000. Its totient is φ = 3008366976.

The previous prime is 6415458859. The next prime is 6415458893. The reversal of 6415458878 is 8788545146.

It is a super-2 number, since 2×6415458878² = 82316225230618037768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 323753 + ... + 342996.

It is an arithmetic number, because the mean of its divisors is an integer number (639079875).

Almost surely, 2^6415458878 is an apocalyptic number.

6415458878 is a deficient number, since it is larger than the sum of its proper divisors (3809819122).

6415458878 is a wasteful number, since it uses less digits than its factorization.

6415458878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667051.

The product of its digits is 8601600, while the sum is 56.

The square root of 6415458878 is about 80096.5597138853. The cubic root of 6415458878 is about 1858.1292013696.

The spelling of 6415458878 in words is "six billion, four hundred fifteen million, four hundred fifty-eight thousand, eight hundred seventy-eight".