12666010620 has 48 divisors (see below), whose sum is σ = 35474116608. Its totient is φ = 3376718400.

The previous prime is 12666010619. The next prime is 12666010661. The reversal of 12666010620 is 2601066621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222045 + ... + 273195.

It is an arithmetic number, because the mean of its divisors is an integer number (739044096).

Almost surely, 2^12666010620 is an apocalyptic number.

12666010620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12666010620 is an abundant number, since it is smaller than the sum of its proper divisors (22808105988).

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

12666010620 is a wasteful number, since it uses less digits than its factorization.

12666010620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55290 (or 55288 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 12666010620 in words is "twelve billion, six hundred sixty-six million, ten thousand, six hundred twenty".