1215746218041 has 16 divisors (see below), whose sum is σ = 1666227505728. Its totient is φ = 787918622400.

The previous prime is 1215746218039. The next prime is 1215746218051. The reversal of 1215746218041 is 1408126475121.

It is not a de Polignac number, because 1215746218041 - 2¹ = 1215746218039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1215746217984 and 1215746218002.

It is not an unprimeable number, because it can be changed into a prime (1215746218051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4546650 + ... + 4806611.

It is an arithmetic number, because the mean of its divisors is an integer number (104139219108).

Almost surely, 2^{1215746218041} is an apocalyptic number.

It is an amenable number.

1215746218041 is a deficient number, since it is larger than the sum of its proper divisors (450481287687).

1215746218041 is a wasteful number, since it uses less digits than its factorization.

1215746218041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354472.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 1215746218041 in words is "one trillion, two hundred fifteen billion, seven hundred forty-six million, two hundred eighteen thousand, forty-one".