6135854805 has 18 divisors (see below), whose sum is σ = 10636392546. Its totient is φ = 3272175648.

The previous prime is 6135854797. The next prime is 6135854819. The reversal of 6135854805 is 5084585316.

6135854805 is a `hidden beast` number, since 61 + 3 + 585 + 4 + 8 + 0 + 5 = 666.

6135854805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2643399396 + 3492455409 = 51414^2 + 59097^2 .

It is not a de Polignac number, because 6135854805 - 2³ = 6135854797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 519627 + ... + 531303.

It is an arithmetic number, because the mean of its divisors is an integer number (590910697).

Almost surely, 2^6135854805 is an apocalyptic number.

It is an amenable number.

6135854805 is a deficient number, since it is larger than the sum of its proper divisors (4500537741).

6135854805 is an frugal number, since it uses more digits than its factorization.

6135854805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23365 (or 11685 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 6135854805 is about 78331.6973197951. The cubic root of 6135854805 is about 1830.7330620393.

Multiplying 6135854805 by its sum of digits (45), we get a square (276113466225 = 525465²).

6135854805 divided by its sum of digits (45) gives a square (136352329 = 11677²).

The spelling of 6135854805 in words is "six billion, one hundred thirty-five million, eight hundred fifty-four thousand, eight hundred five".