12320729472 has 64 divisors (see below), whose sum is σ = 32757226560. Its totient is φ = 4103109120.

The previous prime is 12320729437. The next prime is 12320729537. The reversal of 12320729472 is 27492702321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 12320729472.

It is a congruent 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, 416947 + ... + 445517.

It is an arithmetic number, because the mean of its divisors is an integer number (511831665).

Almost surely, 2^12320729472 is an apocalyptic number.

12320729472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12320729472 is an abundant number, since it is smaller than the sum of its proper divisors (20436497088).

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

12320729472 is a wasteful number, since it uses less digits than its factorization.

12320729472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29711 (or 29699 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 12320729472 in words is "twelve billion, three hundred twenty million, seven hundred twenty-nine thousand, four hundred seventy-two".