6861368553 has 16 divisors (see below), whose sum is σ = 9970927680. Its totient is φ = 4171506624.

The previous prime is 6861368543. The next prime is 6861368603. The reversal of 6861368553 is 3558631686.

It is not a de Polignac number, because 6861368553 - 2⁶ = 6861368489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6861368496 and 6861368505.

It is not an unprimeable number, because it can be changed into a prime (6861368543) 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, 1056598 + ... + 1063071.

It is an arithmetic number, because the mean of its divisors is an integer number (623182980).

Almost surely, 2^6861368553 is an apocalyptic number.

It is an amenable number.

6861368553 is a deficient number, since it is larger than the sum of its proper divisors (3109559127).

6861368553 is a wasteful number, since it uses less digits than its factorization.

6861368553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119768.

The product of its digits is 3110400, while the sum is 51.

The square root of 6861368553 is about 82833.3782541796. The cubic root of 6861368553 is about 1900.2186777854.

The spelling of 6861368553 in words is "six billion, eight hundred sixty-one million, three hundred sixty-eight thousand, five hundred fifty-three".