6909189969276 has 576 divisors, whose sum is σ = 21625289280000. Its totient is φ = 1924854212736.

The previous prime is 6909189969233. The next prime is 6909189969277. The reversal of 6909189969276 is 6729699819096.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 6909189969195 and 6909189969204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6909189969277) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4066620675 + ... + 4066622373.

It is an arithmetic number, because the mean of its divisors is an integer number (37543905000).

Almost surely, 2^{6909189969276} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6909189969276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10812644640000).

6909189969276 is an abundant number, since it is smaller than the sum of its proper divisors (14716099310724).

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

6909189969276 is a wasteful number, since it uses less digits than its factorization.

6909189969276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970 (or 1943 counting only the distinct ones).

The product of its (nonzero) digits is 1428513408, while the sum is 81.

It can be divided in two parts, 6909189 and 969276, that added together give a triangular number (7878465 = T₃₉₆₉).

The spelling of 6909189969276 in words is "six trillion, nine hundred nine billion, one hundred eighty-nine million, nine hundred sixty-nine thousand, two hundred seventy-six".