6378811164 has 72 divisors (see below), whose sum is σ = 17621171568. Its totient is φ = 1929553920.

The previous prime is 6378811133. The next prime is 6378811169. The reversal of 6378811164 is 4611188736.

6378811164 is a `hidden beast` number, since 637 + 8 + 8 + 1 + 1 + 1 + 6 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378811169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214534 + ... + 242450.

It is an arithmetic number, because the mean of its divisors is an integer number (244738494).

Almost surely, 2^6378811164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6378811164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8810585784).

6378811164 is an abundant number, since it is smaller than the sum of its proper divisors (11242360404).

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

6378811164 is a wasteful number, since it uses less digits than its factorization.

6378811164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515 (or 28510 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 6378811164 is about 79867.4599821479. The cubic root of 6378811164 is about 1854.5843125679.

The spelling of 6378811164 in words is "six billion, three hundred seventy-eight million, eight hundred eleven thousand, one hundred sixty-four".