1215441203415 has 64 divisors (see below), whose sum is σ = 2035238400000. Its totient is φ = 618585504768.

The previous prime is 1215441203413. The next prime is 1215441203447. The reversal of 1215441203415 is 5143021445121.

It is not a de Polignac number, because 1215441203415 - 2¹ = 1215441203413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215441203413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116875386 + ... + 116885784.

It is an arithmetic number, because the mean of its divisors is an integer number (31800600000).

Almost surely, 2^{1215441203415} is an apocalyptic number.

1215441203415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1215441203415 is a deficient number, since it is larger than the sum of its proper divisors (819797196585).

1215441203415 is a wasteful number, since it uses less digits than its factorization.

1215441203415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13544.

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 1215441203415 its reverse (5143021445121), we get a palindrome (6358462648536).

The spelling of 1215441203415 in words is "one trillion, two hundred fifteen billion, four hundred forty-one million, two hundred three thousand, four hundred fifteen".