12919861980 has 72 divisors (see below), whose sum is σ = 39232585392. Its totient is φ = 3441574656.

The previous prime is 12919861957. The next prime is 12919862017. The reversal of 12919861980 is 8916891921.

12919861980 is a `hidden beast` number, since 1 + 2 + 9 + 19 + 8 + 619 + 8 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130359 + ... + 206961.

Almost surely, 2^12919861980 is an apocalyptic number.

12919861980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12919861980 is an abundant number, since it is smaller than the sum of its proper divisors (26312723412).

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

12919861980 is a wasteful number, since it uses less digits than its factorization.

12919861980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77555 (or 77550 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 54.

The spelling of 12919861980 in words is "twelve billion, nine hundred nineteen million, eight hundred sixty-one thousand, nine hundred eighty".