7134404778 has 16 divisors (see below), whose sum is σ = 15854232960. Its totient is φ = 2378134908.

The previous prime is 7134404777. The next prime is 7134404801. The reversal of 7134404778 is 8774044317.

7134404778 is a `hidden beast` number, since 7 + 134 + 40 + 477 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7134404777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66059250 + ... + 66059357.

It is an arithmetic number, because the mean of its divisors is an integer number (990889560).

Almost surely, 2^7134404778 is an apocalyptic number.

7134404778 is an abundant number, since it is smaller than the sum of its proper divisors (8719828182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7134404778 is a wasteful number, since it uses less digits than its factorization.

7134404778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132118618 (or 132118612 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 7134404778 is about 84465.4058061642. The cubic root of 7134404778 is about 1925.0968436577.

The spelling of 7134404778 in words is "seven billion, one hundred thirty-four million, four hundred four thousand, seven hundred seventy-eight".