1215115020503 has 4 divisors (see below), whose sum is σ = 1215126392688. Its totient is φ = 1215103648320.

The previous prime is 1215115020461. The next prime is 1215115020517. The reversal of 1215115020503 is 3050205115121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1215115020503 - 2¹⁶ = 1215114954967 is a prime.

It is a super-2 number, since 2×1215115020503² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215115020563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5524283 + ... + 5740028.

It is an arithmetic number, because the mean of its divisors is an integer number (303781598172).

Almost surely, 2^{1215115020503} is an apocalyptic number.

1215115020503 is a deficient number, since it is larger than the sum of its proper divisors (11372185).

1215115020503 is a wasteful number, since it uses less digits than its factorization.

1215115020503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11372184.

The product of its (nonzero) digits is 1500, while the sum is 26.

The spelling of 1215115020503 in words is "one trillion, two hundred fifteen billion, one hundred fifteen million, twenty thousand, five hundred three".