12280617867 has 32 divisors (see below), whose sum is σ = 19248968704. Its totient is φ = 6817219200.

The previous prime is 12280617859. The next prime is 12280617889. The reversal of 12280617867 is 76871608221.

It is not a de Polignac number, because 12280617867 - 2³ = 12280617859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12280617847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 501642 + ... + 525552.

It is an arithmetic number, because the mean of its divisors is an integer number (601530272).

Almost surely, 2^12280617867 is an apocalyptic number.

12280617867 is a deficient number, since it is larger than the sum of its proper divisors (6968350837).

12280617867 is a wasteful number, since it uses less digits than its factorization.

12280617867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24619.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 12280617867 in words is "twelve billion, two hundred eighty million, six hundred seventeen thousand, eight hundred sixty-seven".