20502043215 has 32 divisors (see below), whose sum is σ = 33312266496. Its totient is φ = 10764948480.

The previous prime is 20502043207. The next prime is 20502043259. The reversal of 20502043215 is 51234020502.

It is not a de Polignac number, because 20502043215 - 2³ = 20502043207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2086504 + ... + 2096306.

It is an arithmetic number, because the mean of its divisors is an integer number (1041008328).

Almost surely, 2^20502043215 is an apocalyptic number.

20502043215 is a deficient number, since it is larger than the sum of its proper divisors (12810223281).

20502043215 is a wasteful number, since it uses less digits than its factorization.

20502043215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11959.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20502043215 its reverse (51234020502), we get a palindrome (71736063717).

The spelling of 20502043215 in words is "twenty billion, five hundred two million, forty-three thousand, two hundred fifteen".