12680125540 has 12 divisors (see below), whose sum is σ = 26628263676. Its totient is φ = 5072050208.

The previous prime is 12680125531. The next prime is 12680125559. The reversal of 12680125540 is 4552108621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2266331236 + 10413794304 = 47606^2 + 102048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12680125496 and 12680125505.

It is an unprimeable number.

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, 317003119 + ... + 317003158.

It is an arithmetic number, because the mean of its divisors is an integer number (2219021973).

Almost surely, 2^12680125540 is an apocalyptic number.

12680125540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12680125540 is an abundant number, since it is smaller than the sum of its proper divisors (13948138136).

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

12680125540 is a wasteful number, since it uses less digits than its factorization.

12680125540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634006286 (or 634006284 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 12680125540 in words is "twelve billion, six hundred eighty million, one hundred twenty-five thousand, five hundred forty".