6407133878 has 32 divisors (see below), whose sum is σ = 10179606528. Its totient is φ = 3019579200.

The previous prime is 6407133877. The next prime is 6407133881. The reversal of 6407133878 is 8783317046.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6407133877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846301 + ... + 1849767.

It is an arithmetic number, because the mean of its divisors is an integer number (318112704).

Almost surely, 2^6407133878 is an apocalyptic number.

6407133878 is a deficient number, since it is larger than the sum of its proper divisors (3772472650).

6407133878 is a wasteful number, since it uses less digits than its factorization.

6407133878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 6407133878 is about 80044.5743195627. The cubic root of 6407133878 is about 1857.3251216308.

The spelling of 6407133878 in words is "six billion, four hundred seven million, one hundred thirty-three thousand, eight hundred seventy-eight".