20503612255 has 8 divisors (see below), whose sum is σ = 28119239712. Its totient is φ = 14059619808.

The previous prime is 20503612249. The next prime is 20503612303. The reversal of 20503612255 is 55221630502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20503612255 - 2²⁹ = 19966741343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292908712 + ... + 292908781.

It is an arithmetic number, because the mean of its divisors is an integer number (3514904964).

Almost surely, 2^20503612255 is an apocalyptic number.

20503612255 is a deficient number, since it is larger than the sum of its proper divisors (7615627457).

20503612255 is an equidigital number, since it uses as much as digits as its factorization.

20503612255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585817505.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 20503612255 in words is "twenty billion, five hundred three million, six hundred twelve thousand, two hundred fifty-five".