6789561122890 has 256 divisors, whose sum is σ = 15655195358208. Its totient is φ = 2062829223936.

The previous prime is 6789561122867. The next prime is 6789561122917. The reversal of 6789561122890 is 982211659876.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 925887664 + ... + 925894996.

It is an arithmetic number, because the mean of its divisors is an integer number (61153106868).

Almost surely, 2^{6789561122890} is an apocalyptic number.

6789561122890 is an abundant number, since it is smaller than the sum of its proper divisors (8865634235318).

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

6789561122890 is a wasteful number, since it uses less digits than its factorization.

6789561122890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 6789561122890 in words is "six trillion, seven hundred eighty-nine billion, five hundred sixty-one million, one hundred twenty-two thousand, eight hundred ninety".