12447514520 has 32 divisors (see below), whose sum is σ = 32007895200. Its totient is φ = 4267719168.

The previous prime is 12447514501. The next prime is 12447514543. The reversal of 12447514520 is 2541574421.

It is a super-2 number, since 2×12447514520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22227425 + ... + 22227984.

It is an arithmetic number, because the mean of its divisors is an integer number (1000246725).

Almost surely, 2^12447514520 is an apocalyptic number.

12447514520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12447514520 is an abundant number, since it is smaller than the sum of its proper divisors (19560380680).

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

12447514520 is a wasteful number, since it uses less digits than its factorization.

12447514520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44455427 (or 44455423 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 12447514520 in words is "twelve billion, four hundred forty-seven million, five hundred fourteen thousand, five hundred twenty".