6778745292 has 192 divisors, whose sum is σ = 18798796800. Its totient is φ = 1879200000.

The previous prime is 6778745287. The next prime is 6778745297. The reversal of 6778745292 is 2925478776.

It is an interprime number because it is at equal distance from previous prime (6778745287) and next prime (6778745297).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (6778745297) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9025917 + ... + 9026667.

It is an arithmetic number, because the mean of its divisors is an integer number (97910400).

Almost surely, 2^6778745292 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 6778745292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9399398400).

6778745292 is an abundant number, since it is smaller than the sum of its proper divisors (12020051508).

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

6778745292 is a wasteful number, since it uses less digits than its factorization.

6778745292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 906 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 57.

The square root of 6778745292 is about 82333.1360510457. The cubic root of 6778745292 is about 1892.5605014550.

The spelling of 6778745292 in words is "six billion, seven hundred seventy-eight million, seven hundred forty-five thousand, two hundred ninety-two".