1218258527241 has 16 divisors (see below), whose sum is σ = 1856495355264. Its totient is φ = 696109701504.

The previous prime is 1218258527237. The next prime is 1218258527249. The reversal of 1218258527241 is 1427258528121.

It is a happy number.

It is not a de Polignac number, because 1218258527241 - 2² = 1218258527237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1218258527249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1188636 + ... + 1961981.

It is an arithmetic number, because the mean of its divisors is an integer number (116030959704).

Almost surely, 2^{1218258527241} is an apocalyptic number.

It is an amenable number.

1218258527241 is a deficient number, since it is larger than the sum of its proper divisors (638236828023).

1218258527241 is a wasteful number, since it uses less digits than its factorization.

1218258527241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169040.

The product of its digits is 716800, while the sum is 48.

The spelling of 1218258527241 in words is "one trillion, two hundred eighteen billion, two hundred fifty-eight million, five hundred twenty-seven thousand, two hundred forty-one".