12078661760 has 256 divisors, whose sum is σ = 33639926400. Its totient is φ = 4100751360.

The previous prime is 12078661757. The next prime is 12078661769. The reversal of 12078661760 is 6716687021.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (12078661769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9763862 + ... + 9765098.

Almost surely, 2^12078661760 is an apocalyptic number.

12078661760 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 12078661760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16819963200).

12078661760 is an abundant number, since it is smaller than the sum of its proper divisors (21561264640).

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

12078661760 is a wasteful number, since it uses less digits than its factorization.

12078661760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 12078661760 in words is "twelve billion, seventy-eight million, six hundred sixty-one thousand, seven hundred sixty".