12406452820 has 12 divisors (see below), whose sum is σ = 26053550964. Its totient is φ = 4962581120.

The previous prime is 12406452811. The next prime is 12406452829. The reversal of 12406452820 is 2825460421.

It is an interprime number because it is at equal distance from previous prime (12406452811) and next prime (12406452829).

It can be written as a sum of positive squares in 2 ways, for example, as 5067446596 + 7339006224 = 71186^2 + 85668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12406452829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310161301 + ... + 310161340.

It is an arithmetic number, because the mean of its divisors is an integer number (2171129247).

Almost surely, 2^12406452820 is an apocalyptic number.

12406452820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12406452820 is an abundant number, since it is smaller than the sum of its proper divisors (13647098144).

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

12406452820 is a wasteful number, since it uses less digits than its factorization.

12406452820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620322650 (or 620322648 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 12406452820 in words is "twelve billion, four hundred six million, four hundred fifty-two thousand, eight hundred twenty".