12169016640 has 896 divisors, whose sum is σ = 51616051200. Its totient is φ = 2664161280.

The previous prime is 12169016597. The next prime is 12169016689. The reversal of 12169016640 is 4661096121.

12169016640 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 9 + 0 + 1 + 6 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12169016595 and 12169016604.

It is a congruent 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, 41532334 + ... + 41532626.

It is an arithmetic number, because the mean of its divisors is an integer number (57607200).

Almost surely, 2^12169016640 is an apocalyptic number.

12169016640 is a gapful number since it is divisible by the number (10) 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 12169016640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25808025600).

12169016640 is an abundant number, since it is smaller than the sum of its proper divisors (39447034560).

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

12169016640 is a wasteful number, since it uses less digits than its factorization.

12169016640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 12169016640 in words is "twelve billion, one hundred sixty-nine million, sixteen thousand, six hundred forty".