6789819780 has 36 divisors (see below), whose sum is σ = 20595787212. Its totient is φ = 1810618560.

The previous prime is 6789819761. The next prime is 6789819809. The reversal of 6789819780 is 879189876.

It can be written as a sum of positive squares in 2 ways, for example, as 2493803844 + 4296015936 = 49938^2 + 65544^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6789819780² = 92203305289758496800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18860431 + ... + 18860790.

Almost surely, 2^6789819780 is an apocalyptic number.

6789819780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6789819780 is an abundant number, since it is smaller than the sum of its proper divisors (13805967432).

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

6789819780 is a wasteful number, since it uses less digits than its factorization.

6789819780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37721236 (or 37721231 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 63.

The square root of 6789819780 is about 82400.3627419200. The cubic root of 6789819780 is about 1893.5905709003.

It can be divided in two parts, 67898 and 19780, that added together give a palindrome (87678).

The spelling of 6789819780 in words is "six billion, seven hundred eighty-nine million, eight hundred nineteen thousand, seven hundred eighty".