6813752166 has 48 divisors (see below), whose sum is σ = 15906146256. Its totient is φ = 2095564608.

The previous prime is 6813752161. The next prime is 6813752171. The reversal of 6813752166 is 6612573186.

6813752166 is a `hidden beast` number, since 68 + 1 + 3 + 7 + 521 + 66 = 666.

It is an interprime number because it is at equal distance from previous prime (6813752161) and next prime (6813752171).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813752161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 622396 + ... + 633248.

It is an arithmetic number, because the mean of its divisors is an integer number (331378047).

Almost surely, 2^6813752166 is an apocalyptic number.

6813752166 is an abundant number, since it is smaller than the sum of its proper divisors (9092394090).

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

6813752166 is a wasteful number, since it uses less digits than its factorization.

6813752166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557 (or 13554 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 6813752166 is about 82545.4551504806. The cubic root of 6813752166 is about 1895.8127702608.

The spelling of 6813752166 in words is "six billion, eight hundred thirteen million, seven hundred fifty-two thousand, one hundred sixty-six".