6774378920 has 32 divisors (see below), whose sum is σ = 15255236520. Its totient is φ = 2707461120.

The previous prime is 6774378901. The next prime is 6774378953. The reversal of 6774378920 is 298734776.

It can be written as a sum of positive squares in 4 ways, for example, as 4849451044 + 1924927876 = 69638^2 + 43874^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23261 + ... + 118700.

Almost surely, 2^6774378920 is an apocalyptic number.

It is an amenable number.

6774378920 is an abundant number, since it is smaller than the sum of its proper divisors (8480857600).

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

6774378920 is a wasteful number, since it uses less digits than its factorization.

6774378920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143165 (or 143161 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 53.

The square root of 6774378920 is about 82306.6152869865. The cubic root of 6774378920 is about 1892.1540644850.

The spelling of 6774378920 in words is "six billion, seven hundred seventy-four million, three hundred seventy-eight thousand, nine hundred twenty".