12275809880 has 16 divisors (see below), whose sum is σ = 27620572320. Its totient is φ = 4910323936.

The previous prime is 12275809853. The next prime is 12275809907. The reversal of 12275809880 is 8890857221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12275809853) and next prime (12275809907).

It is a super-2 number, since 2×12275809880² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 153447584 + ... + 153447663.

It is an arithmetic number, because the mean of its divisors is an integer number (1726285770).

Almost surely, 2^12275809880 is an apocalyptic number.

12275809880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12275809880 is an abundant number, since it is smaller than the sum of its proper divisors (15344762440).

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

12275809880 is a wasteful number, since it uses less digits than its factorization.

12275809880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306895258 (or 306895254 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 12275809880 in words is "twelve billion, two hundred seventy-five million, eight hundred nine thousand, eight hundred eighty".