12047504920 has 128 divisors (see below), whose sum is σ = 31397232960. Its totient is φ = 4111810560.

The previous prime is 12047504897. The next prime is 12047504929. The reversal of 12047504920 is 2940574021.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12047504929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2967532 + ... + 2971588.

Almost surely, 2^12047504920 is an apocalyptic number.

12047504920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12047504920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15698616480).

12047504920 is an abundant number, since it is smaller than the sum of its proper divisors (19349728040).

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

12047504920 is a wasteful number, since it uses less digits than its factorization.

12047504920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493 (or 4489 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 12047504920 in words is "twelve billion, forty-seven million, five hundred four thousand, nine hundred twenty".