12969961392 has 80 divisors (see below), whose sum is σ = 35136188640. Its totient is φ = 4117026816.

The previous prime is 12969961343. The next prime is 12969961397. The reversal of 12969961392 is 29316996921.

It is not an unprimeable number, because it can be changed into a prime (12969961397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37798 + ... + 165434.

It is an arithmetic number, because the mean of its divisors is an integer number (439202358).

Almost surely, 2^12969961392 is an apocalyptic number.

12969961392 is a gapful number since it is divisible by the number (12) 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 12969961392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17568094320).

12969961392 is an abundant number, since it is smaller than the sum of its proper divisors (22166227248).

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

12969961392 is a wasteful number, since it uses less digits than its factorization.

12969961392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127750 (or 127744 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 57.

The spelling of 12969961392 in words is "twelve billion, nine hundred sixty-nine million, nine hundred sixty-one thousand, three hundred ninety-two".