12786489660 has 96 divisors (see below), whose sum is σ = 43070307840. Its totient is φ = 2768802048.

The previous prime is 12786489649. The next prime is 12786489671. The reversal of 12786489660 is 6698468721.

12786489660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12786489649) and next prime (12786489671).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 12786489660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793179 + ... + 809138.

It is an arithmetic number, because the mean of its divisors is an integer number (448649040).

Almost surely, 2^12786489660 is an apocalyptic number.

12786489660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12786489660 is an abundant number, since it is smaller than the sum of its proper divisors (30283818180).

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

12786489660 is a wasteful number, since it uses less digits than its factorization.

12786489660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602355 (or 1602353 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 12786489660 in words is "twelve billion, seven hundred eighty-six million, four hundred eighty-nine thousand, six hundred sixty".