12981507501912 has 32 divisors (see below), whose sum is σ = 32985797754480. Its totient is φ = 4256231967360.

The previous prime is 12981507501901. The next prime is 12981507501923. The reversal of 12981507501912 is 21910570518921.

It is an interprime number because it is at equal distance from previous prime (12981507501901) and next prime (12981507501923).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4433573503 + ... + 4433576430.

Almost surely, 2^{12981507501912} is an apocalyptic number.

12981507501912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12981507501912 is an abundant number, since it is smaller than the sum of its proper divisors (20004290252568).

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

12981507501912 is a wasteful number, since it uses less digits than its factorization.

12981507501912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867150003 (or 8867149999 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 51.

The spelling of 12981507501912 in words is "twelve trillion, nine hundred eighty-one billion, five hundred seven million, five hundred one thousand, nine hundred twelve".