12137605280 has 24 divisors (see below), whose sum is σ = 28675092852. Its totient is φ = 4855042048.

The previous prime is 12137605253. The next prime is 12137605297. The reversal of 12137605280 is 8250673121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11888849296 + 248755984 = 109036^2 + 15772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12137605280.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37929857 + ... + 37930176.

Almost surely, 2^12137605280 is an apocalyptic number.

12137605280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12137605280 is an abundant number, since it is smaller than the sum of its proper divisors (16537487572).

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

12137605280 is an equidigital number, since it uses as much as digits as its factorization.

12137605280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75860048 (or 75860040 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 12137605280 in words is "twelve billion, one hundred thirty-seven million, six hundred five thousand, two hundred eighty".