20503505703 has 8 divisors (see below), whose sum is σ = 27338712048. Its totient is φ = 13668651584.

The previous prime is 20503505677. The next prime is 20503505761. The reversal of 20503505703 is 30750530502.

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 20503505703 - 2⁸ = 20503505447 is a prime.

It is a super-2 number, since 2×20503505703² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503505783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114025 + ... + 232397.

It is an arithmetic number, because the mean of its divisors is an integer number (3417339006).

Almost surely, 2^20503505703 is an apocalyptic number.

20503505703 is a deficient number, since it is larger than the sum of its proper divisors (6835206345).

20503505703 is a wasteful number, since it uses less digits than its factorization.

20503505703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176113.

The product of its (nonzero) digits is 15750, while the sum is 30.

The spelling of 20503505703 in words is "twenty billion, five hundred three million, five hundred five thousand, seven hundred three".