12541385811500 has 144 divisors (see below), whose sum is σ = 33896473281216. Its totient is φ = 3969141696000.

The previous prime is 12541385811481. The next prime is 12541385811509. The reversal of 12541385811500 is 511858314521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12541385811509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10009841 + ... + 11192840.

It is an arithmetic number, because the mean of its divisors is an integer number (235392175564).

Almost surely, 2^{12541385811500} is an apocalyptic number.

12541385811500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12541385811500 is an abundant number, since it is smaller than the sum of its proper divisors (21355087469716).

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

12541385811500 is a wasteful number, since it uses less digits than its factorization.

12541385811500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21202733 (or 21202708 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 44.

The spelling of 12541385811500 in words is "twelve trillion, five hundred forty-one billion, three hundred eighty-five million, eight hundred eleven thousand, five hundred".