12477478280 has 64 divisors (see below), whose sum is σ = 28498832640. Its totient is φ = 4915717632.

The previous prime is 12477478187. The next prime is 12477478283. The reversal of 12477478280 is 8287477421.

It is not an unprimeable number, because it can be changed into a prime (12477478283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2412257 + ... + 2417423.

It is an arithmetic number, because the mean of its divisors is an integer number (445294260).

Almost surely, 2^12477478280 is an apocalyptic number.

12477478280 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 12477478280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14249416320).

12477478280 is an abundant number, since it is smaller than the sum of its proper divisors (16021354360).

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

12477478280 is a wasteful number, since it uses less digits than its factorization.

12477478280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6078 (or 6074 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 50.

The spelling of 12477478280 in words is "twelve billion, four hundred seventy-seven million, four hundred seventy-eight thousand, two hundred eighty".