12047499620 has 108 divisors (see below), whose sum is σ = 28315454580. Its totient is φ = 4303653120.

The previous prime is 12047499617. The next prime is 12047499623. The reversal of 12047499620 is 2699474021.

It is an interprime number because it is at equal distance from previous prime (12047499617) and next prime (12047499623).

It can be written as a sum of positive squares in 6 ways, for example, as 3661702144 + 8385797476 = 60512^2 + 91574^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12047499623) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3246326 + ... + 3250034.

It is an arithmetic number, because the mean of its divisors is an integer number (262180135).

Almost surely, 2^12047499620 is an apocalyptic number.

12047499620 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 12047499620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14157727290).

12047499620 is an abundant number, since it is smaller than the sum of its proper divisors (16267954960).

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

12047499620 is a wasteful number, since it uses less digits than its factorization.

12047499620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806 (or 3760 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 12047499620 in words is "twelve billion, forty-seven million, four hundred ninety-nine thousand, six hundred twenty".