6798778975 has 24 divisors (see below), whose sum is σ = 9026743680. Its totient is φ = 5061534720.

The previous prime is 6798778969. The next prime is 6798778979. The reversal of 6798778975 is 5798778976.

It is not a de Polignac number, because 6798778975 - 2⁹ = 6798778463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6798778898 and 6798778907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6798778979) 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, 52047 + ... + 127696.

It is an arithmetic number, because the mean of its divisors is an integer number (376114320).

Almost surely, 2^6798778975 is an apocalyptic number.

6798778975 is a deficient number, since it is larger than the sum of its proper divisors (2227964705).

6798778975 is a wasteful number, since it uses less digits than its factorization.

6798778975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179859 (or 179854 counting only the distinct ones).

The product of its digits is 373403520, while the sum is 73.

The square root of 6798778975 is about 82454.7086284343. The cubic root of 6798778975 is about 1894.4230716820.

Subtracting from 6798778975 its reverse (5798778976), we obtain a palindrome (999999999).

The spelling of 6798778975 in words is "six billion, seven hundred ninety-eight million, seven hundred seventy-eight thousand, nine hundred seventy-five".