12267680520 has 128 divisors (see below), whose sum is σ = 37748592000. Its totient is φ = 3187537920.

The previous prime is 12267680461. The next prime is 12267680527. The reversal of 12267680520 is 2508676221.

It is not an unprimeable number, because it can be changed into a prime (12267680527) 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, 7177426 + ... + 7179134.

It is an arithmetic number, because the mean of its divisors is an integer number (294910875).

Almost surely, 2^12267680520 is an apocalyptic number.

12267680520 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 12267680520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18874296000).

12267680520 is an abundant number, since it is smaller than the sum of its proper divisors (25480911480).

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

12267680520 is a wasteful number, since it uses less digits than its factorization.

12267680520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223 (or 3219 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 12267680520 in words is "twelve billion, two hundred sixty-seven million, six hundred eighty thousand, five hundred twenty".