20500503215 has 16 divisors (see below), whose sum is σ = 24753263040. Its totient is φ = 16298926080.

The previous prime is 20500503211. The next prime is 20500503223. The reversal of 20500503215 is 51230500502.

It is not a de Polignac number, because 20500503215 - 2² = 20500503211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500503211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545945 + ... + 582285.

It is an arithmetic number, because the mean of its divisors is an integer number (1547078940).

Almost surely, 2^20500503215 is an apocalyptic number.

20500503215 is a deficient number, since it is larger than the sum of its proper divisors (4252759825).

20500503215 is a wasteful number, since it uses less digits than its factorization.

20500503215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37042.

The product of its (nonzero) digits is 1500, while the sum is 23.

The spelling of 20500503215 in words is "twenty billion, five hundred million, five hundred three thousand, two hundred fifteen".