12305253440 has 56 divisors (see below), whose sum is σ = 29586448320. Its totient is φ = 4874300928.

The previous prime is 12305253439. The next prime is 12305253473. The reversal of 12305253440 is 4435250321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153710 + ... + 219629.

Almost surely, 2^12305253440 is an apocalyptic number.

12305253440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12305253440 is an abundant number, since it is smaller than the sum of its proper divisors (17281194880).

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

12305253440 is a wasteful number, since it uses less digits than its factorization.

12305253440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373459 (or 373449 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 12305253440 in words is "twelve billion, three hundred five million, two hundred fifty-three thousand, four hundred forty".