12541217450 has 24 divisors (see below), whose sum is σ = 23674829952. Its totient is φ = 4941612720.

The previous prime is 12541217449. The next prime is 12541217453. The reversal of 12541217450 is 5471214521.

It is not an unprimeable number, because it can be changed into a prime (12541217453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1868474 + ... + 1875173.

It is an arithmetic number, because the mean of its divisors is an integer number (986451248).

Almost surely, 2^12541217450 is an apocalyptic number.

12541217450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12541217450 is a deficient number, since it is larger than the sum of its proper divisors (11133612502).

12541217450 is a wasteful number, since it uses less digits than its factorization.

12541217450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743726 (or 3743721 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The spelling of 12541217450 in words is "twelve billion, five hundred forty-one million, two hundred seventeen thousand, four hundred fifty".