12805166740 has 48 divisors (see below), whose sum is σ = 28744450560. Its totient is φ = 4779864320.

The previous prime is 12805166723. The next prime is 12805166741. The reversal of 12805166740 is 4766150821.

It is a junction number, because it is equal to n+sod(n) for n = 12805166693 and 12805166702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805166741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320620 + ... + 358339.

It is an arithmetic number, because the mean of its divisors is an integer number (598842720).

Almost surely, 2^12805166740 is an apocalyptic number.

12805166740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12805166740 is an abundant number, since it is smaller than the sum of its proper divisors (15939283820).

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

12805166740 is a wasteful number, since it uses less digits than its factorization.

12805166740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679032 (or 679030 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 12805166740 in words is "twelve billion, eight hundred five million, one hundred sixty-six thousand, seven hundred forty".