12669473920 has 32 divisors (see below), whose sum is σ = 30287962620. Its totient is φ = 5067789312.

The previous prime is 12669473909. The next prime is 12669473953. The reversal of 12669473920 is 2937496621.

It can be written as a sum of positive squares in 2 ways, for example, as 11996382784 + 673091136 = 109528^2 + 25944^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 9897387 + ... + 9898666.

Almost surely, 2^12669473920 is an apocalyptic number.

12669473920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12669473920 is an abundant number, since it is smaller than the sum of its proper divisors (17618488700).

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

12669473920 is an equidigital number, since it uses as much as digits as its factorization.

12669473920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19796072 (or 19796060 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 12669473920 in words is "twelve billion, six hundred sixty-nine million, four hundred seventy-three thousand, nine hundred twenty".