1215011040415 has 16 divisors (see below), whose sum is σ = 1480583800800. Its totient is φ = 957008604672.

The previous prime is 1215011040361. The next prime is 1215011040421. The reversal of 1215011040415 is 5140401105121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1215011040415 - 2²¹ = 1215008943263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1215011040415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2717445 + ... + 3132814.

It is an arithmetic number, because the mean of its divisors is an integer number (92536487550).

Almost surely, 2^{1215011040415} is an apocalyptic number.

1215011040415 is a deficient number, since it is larger than the sum of its proper divisors (265572760385).

1215011040415 is an equidigital number, since it uses as much as digits as its factorization.

1215011040415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850906.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 1215011040415 its reverse (5140401105121), we get a palindrome (6355412145536).

The spelling of 1215011040415 in words is "one trillion, two hundred fifteen billion, eleven million, forty thousand, four hundred fifteen".