1215050216539 has 4 divisors (see below), whose sum is σ = 1215055249624. Its totient is φ = 1215045183456.

The previous prime is 1215050216519. The next prime is 1215050216551. The reversal of 1215050216539 is 9356120505121.

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 1215050216539 - 2²³ = 1215041827931 is a prime.

It is a super-2 number, since 2×1215050216539² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215050216519) 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, 2135157 + ... + 2643670.

It is an arithmetic number, because the mean of its divisors is an integer number (303763812406).

Almost surely, 2^{1215050216539} is an apocalyptic number.

1215050216539 is a deficient number, since it is larger than the sum of its proper divisors (5033085).

1215050216539 is an equidigital number, since it uses as much as digits as its factorization.

1215050216539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033084.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 1215050216539 in words is "one trillion, two hundred fifteen billion, fifty million, two hundred sixteen thousand, five hundred thirty-nine".