12280372605 has 32 divisors (see below), whose sum is σ = 21862310400. Its totient is φ = 6540371136.

The previous prime is 12280372571. The next prime is 12280372613. The reversal of 12280372605 is 50627308221.

12280372605 is a `hidden beast` number, since 1 + 2 + 280 + 372 + 6 + 0 + 5 = 666.

It is not a de Polignac number, because 12280372605 - 2⁷ = 12280372477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12280372605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33807 + ... + 160323.

It is an arithmetic number, because the mean of its divisors is an integer number (683197200).

Almost surely, 2^12280372605 is an apocalyptic number.

12280372605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12280372605 is a deficient number, since it is larger than the sum of its proper divisors (9581937795).

12280372605 is a wasteful number, since it uses less digits than its factorization.

12280372605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127250 (or 127244 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 12280372605 in words is "twelve billion, two hundred eighty million, three hundred seventy-two thousand, six hundred five".