6778751952 has 40 divisors (see below), whose sum is σ = 20013459136. Its totient is φ = 1936786176.

The previous prime is 6778751897. The next prime is 6778751963. The reversal of 6778751952 is 2591578776.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6778751892 and 6778751901.

It is a congruent number.

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, 10087093 + ... + 10087764.

Almost surely, 2^6778751952 is an apocalyptic number.

It is an amenable number.

6778751952 is an abundant number, since it is smaller than the sum of its proper divisors (13234707184).

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

6778751952 is a wasteful number, since it uses less digits than its factorization.

6778751952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20174875 (or 20174869 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 57.

The square root of 6778751952 is about 82333.1764964768. The cubic root of 6778751952 is about 1892.5611212574.

The spelling of 6778751952 in words is "six billion, seven hundred seventy-eight million, seven hundred fifty-one thousand, nine hundred fifty-two".