6912409969920 has 2304 divisors, whose sum is σ = 29241834209280. Its totient is φ = 1352584396800.

The previous prime is 6912409969919. The next prime is 6912409969939. The reversal of 6912409969920 is 299699042196.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 52766488255 + ... + 52766488385.

It is an arithmetic number, because the mean of its divisors is an integer number (12691768320).

Almost surely, 2^{6912409969920} is an apocalyptic number.

6912409969920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6912409969920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14620917104640).

6912409969920 is an abundant number, since it is smaller than the sum of its proper divisors (22329424239360).

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

6912409969920 is a wasteful number, since it uses less digits than its factorization.

6912409969920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 34012224, while the sum is 66.

The spelling of 6912409969920 in words is "six trillion, nine hundred twelve billion, four hundred nine million, nine hundred sixty-nine thousand, nine hundred twenty".